Previous Standard Form Textbook Answers. GCSE Maths Revision: Infinite Questions and Answers. Work out x 104 - x 102 Give your answer in standard form. Practice Questions; Post navigation. Standard Form 1 Test your understanding of standard form (scientific notation) with this self-marking quiz. This will allow you to see what topics you need to work on. Standard form is a shorthand way of expressing VERY LARGE or VERY SMALL numbers. Videos, worksheets, 5-a-day and much more [2] 4. For GCSE Maths coursework and exams for students, parents and teachers. The Corbettmaths Practice Questions on Standard Form. This page has revision notes, videos and past exam questions arranged by topic. (b) Write 0.000 35 in standard form. In the figure below are three different shapes: squares, triangles and circles. TH H T O 6 54 13 8 Standard Form. In Britain this is another name for Scientific Notation, where you write down a number this way:. Free resources for teachers and students to hopefully make the teaching and learning of mathematics a wee bit easier and more fun. MATHEMATICS Higher Tier Paper 1 Non-Calculator H . The Corbettmaths Textbook Exercise on Standard Form. This means that most of the links on this page are not yet active. India; School Math. 303 30S A!qso 301 A!qso 300 evoM Rom MOkK!Uae honk sueMSke essuJ 3 dnsel!ou. 5-a-day Workbooks. Standard from to ordinary numbers and ordinary numbers to standard form are two skills you will be taught. 5 × 1 0 × 1 0 − 5 = 1. In the tens column, 3 is less than 9. answers; Post navigation. This time, divide the two first bits of the standard forms. If you score 80% or above (20/25) you pass the stage and you can move onto the next stage. 1 Work out 26 +62 Circle your answer. But fear not. ... What is 0.000059 in standard form? (1 + i) (1 + i) 5 (Simplify your answer. Maths Made Easy © Complete Tuition Ltd 2017 Standard Form (Non-Calculator) Learn about and revise how to use standard form to tackle very large or small numbers with this BBC Bitesize GCSE Maths Edexcel study guide. Free resources for teachers and students to hopefully make the teaching and learning of mathematics a wee bit easier and more fun. SAT Subject Test: Math Level 1; IMO; Navodaya Vidyalaya; SEAMO; NSTSE-MATHS; Olympiad; NTSE-Maths; Challenge; Q&A. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; … Adding two numbers given in standard form. ... Give your answer in standard form. Example. GCSE Revision Cards. Show Answer Hide Answer. 4987 = ( 4 × 103) + ( 9 × 102) + ( 8 × 101) + ( 7 × 100) 4987 = (4 \times 103) + (9 \times 102) + (8 \times101) + (7 \times100) 4987 = (4×103)+ (9×102)+ (8× 101)+ (7× 100) 4987 = 4000 + 90 + 80 + 7. 4987. PLEASE NOTE: This navigation system is still under development. 50 : 100 . Answer to Write the expression in the standard form a +bi. Give your answer in standard form. (d) Multiply and divide numbers in standard form. Loading... Save for later. NCERT book is the best for class 5 students to learn the basic concepts of Maths at the primary level of education. Place the digit 4 in the answer space for the tens column. GCSE Maths Takeaway. Standard Form of a Decimal Number. Previous Simultaneous Equations Textbook Answers. 10 3 = 1000, so 4 × 10 3 = 4000. Hint: 12÷59≈0.20 [5 marks] Answer End of Questions END 5 Example 5: p 2 = x − y x y. x = 8.5 × 10 9. y = 4 × 10 8. Discover thousands of math skills covering pre-K to 12th grade, from counting to calculus, with infinite questions that adapt to each student's level. Solution for For Exercise, write the standard form of an equation of the ellipse subject to the following conditions.Foci: (0, −1) and (−6, −1); Eccentricity:… Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; ... Click here for Answers . answers; Post navigation. Lessons. Standard Form Textbook Answers Click here for Answers . Read more. Where there is invalid subsequent working 2 is not available eg award 1/2 for the following: 3 4 (a) 3, 4 (b) 3 4 7 (c) 3 4 5 22 Standard Form Standard form is a way of writing down very large or very small numbers easily. October 7, 2019 October 22, 2019 corbettmaths. 2 What is 800 million in standard form? Differentiated worksheet on adding and subtracting numbers in standard form. Where there are no brackets i e 3 4 award 1/2 4. NCERT book for Class 5 Maths subject is provided here for download in PDF format. January 27, 2019 August 10, 2019 corbettmaths. 4987 4987 would be given as. Back to Scheme Overview Maths Genie is a free GCSE and A Level revision site. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; ... Post navigation. Maths revision video and notes on the topics of: converting between standard form and ordinary numbers; and adding, subtracting, multiplying and dividing numbers in standard form. Class 5 maths printable worksheets, online practice and online tests. Standard Form Textbook Answers. Standard Form Textbook Exercise. Can you write them in normal form. Standard form requires the number be between 1 1 1 and 1 0 10 1 0, so adjusting by a factor of 1 0 10 1 0, we have, 1 5 × 1 0 − 5 = 1. Class 1; Class 2; Class 3 ; Class 4; Class 5; Class 6; Class 7; Class 8; Class 9; Class 10; Competitive Exams. The booklet can be used as a resource for revision by students as they transition from Upper Primary to Form … Question 1: a) 4×10 4 b) 2×10 6 c) 8×10 6 d) 7×10 3 . Show Answer Hide Answer. About this resource. The Gold Questions at the end, will get the Higher achieving students thinking. Mathster; Corbett Maths Lessons. Probing Questions . [1 mark] 800 × 106. Answers included. Homepage. Maths Genie Stage 5 Back to Scheme Overview Start by taking a test. CCSS 5.NBT.A.3 worksheets with answers to teach, practice or learn 5th Grade common core mathematics is available online for free in printable & downloadable (pdf) format. How to answer standard form questions in the GCSE exam, How to perform calculations with standard form, Revision Lessons and videos to be used for higher Maths GCSE, They will contain common exam style topics and questions, examples and step by step solutions 2 *02* IB/M/Nov17/8300/1H Do not write outside the box Answer all questions in the spaces provided . Chapter 4: Percentage. Answer to Write the standard form of the equation of the circle with the given center and radius. … Welcome; Videos and Worksheets; Primary; 5-a-day. Grade 5 multiple choice maths questions on ratios with answers. Primary Study Cards. Click here for Answers . Chapter 7: Length. Make sure you are happy with the following topics before continuing: Decimals basics; Place Value Math Knowledge Base (Q&A) Ask a new … Adding in standard form. Learn about and revise how to use standard form to tackle very large or small numbers with this BBC Bitesize GCSE Maths Edexcel study guide. Start by taking a test. The questions are carefully selected and cover the full range of expected GCSE skills. GCSE Revision Cards. So 4000 can be written as 4 × 10³. To subtract, you need to take 1 hundred and regroup to 10 tens. Updated: Jan 17, 2019. pdf, 1 MB. Standard Form. There are 6 key skills that you need to learn. Thankyou though so far this is the best maths website I have ever came across And best of all they all (well, most!) Chapter 6: Time. Created: Oct 17, 2017. Bssq escu dnseJ!ou csksW11À Ron When you feel ready to take another test do so. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; October 10, 2019 October 22, 2019 corbettmaths. DOU J ebeuq '00 Oua ou ous dnse'!ou. Here are some numbers written in standard form. Worksheets with answers . In other countries it means "not in expanded form" (see Composing and Decomposing Numbers): Interactive Resources . I will be working hard over the next couple of weeks to upload relevant resources and activate these links. It has past papers, mark schemes and model answers to GCSE and A Level exam questions. Login/Register. Circle your answer. Workout. Standard Form: In science lessons, you have no doubt used scientific notation, or standard form, to write numerical answers to questions that are either very large or very small. Interactive Resources . You should work through the videos first and then, after you have watched all the videos you need to watch, work through the exam style questions for these topics - visiting a topic more than once (as opposed to doing the topics in blocks) has been shown to improve memory. Visit http://www.mathsmadeeasy.co.uk/ for more fantastic resources. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; Search Results for: standard form. This will allow you to … (b) Work out the value of (3.2 × 103) × (6.5 × 104) Give your answer in standard form. (b) Be able to use the x10^ button on your calculator. People who do not have a mathematics background can use these tools and eliminate unnecessary stress. Give your answer in standard form. GCSE IGCSE Maths Mathematics - standard form - convert to & from standard form - add subtract multiply divide in standard form - differentiated practice worksheets with space for answers - solutions included. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. A standard form calculator is a math tool which helps in performing mathematical operations when the numbers are expressed in scientific notation. standard-form. Tutorials, tips and advice on Standard Form. Example 4: (a) Write 7900 in standard form. standard-form-solutions. 5-a-day GCSE 9-1; 5-a-day Primary; 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. e) 1×10 8 f) 9×10 2 g) 5×10 5 h) 1.9×10 3 STANDARD FIVE MATHEMATICS REVIEW BOOKLET Curriculum Planning and Development Division (May 2017) NOTES TO STUDENTS The booklet highlights some important facts that students are required to know in Mathematics through their preparation for the SEA, as prior knowledge for Form One. Multiplying and Dividing Numbers in Standard Form - Question Page Give your answers in standard form. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. Here is a suggestion for how you might use these resources: Choose a topic you think you need to practice (2 marks) (1) 8 (a) Write 0.00931 in standard form. Accessibility links. = 4 × 10 4. Free Mathematics Tutorials. In this example, 5326.6 is written as 5.3266 × 10 3, because 5326.6 = 5.3266 × 1000 = 5.3266 × 10 3. Convert between ordinary numbers and standard form. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. Report a problem. (c) Convert numbers to and from standard form. Chapter 3: Decimals. About this resource . August 29, 2019 October 22, … (Level 5) =2×104 =6×106 =1×105 Find the value of . Rich Tasks . Worksheets with answers . Standard Form Practice Questions Click here for Questions . Also explore over 6 similar quizzes in this category. Teachers. 5 × 1 0 − 4 15\times10^ {-5}=1.5\times10\times10^ {-5}=1.5\times10^ {-4} 1 5 × 1 0 − 5 = 1. Teachers. Give your answer in standard form correct to 2 significant figures. The Corbettmaths Textbook Exercise answers on Standard Form. 10 tens added to 3 tens equal 13 tens. 5 × 1 0 − 4. . Diagnostic Questions . Maths Genie is a free GCSE and A Level revision site. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; October 10, 2019 October 22, 2019 corbettmaths. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. Videos, worksheets, 5-a-day and much more GCSE Maths Specification and Awarding Body Information Videos . To use these tools, you have to enter the numbers in standard form and select the operation to be performed. To convert this to standard form, multiply 0.25 by 10 so that it is a number between 1 and 10. To convert it into the standard form, you need to portray it as a power of 10. Give your answer in standard form. Next Surface Area: L-shape Prism Textbook Answers. [2] 5. Topics October 10, 2019 October 22, 2019 corbettmaths. (3 X 105) X (4 X 106) 12 x 1011 This is not in Standard form, So we have to change our answer: 1.2 x 10 x 1011 12 1.2 x 10 Standard form is a number between 1 and 10 multiplied by a … … Learn about and revise how to use standard form to tackle very large or small numbers with GCSE Bitesize AQA Maths. Math Trivia Quiz quiz which has been attempted 3676 times by avid quiz takers. (2 marks) (1) (2 marks) (1) (1) (1) (2) (4 marks) (1) (1) 7 Work out (8.69 × 10-5) ÷ (5.5 × 10-7) Give your answer in standard form. Standard Form Textbook Answers Click here for Answers . The question asks for the answer in standard form, but this is not standard form because the first part (the 40) should be a number between 1 and 10. answers; Post navigation. So far I think this website is awesome, however it would of been better if you wrote the answers down step by step, as to gain all the marks you need to show the examiner how you got the answers with all the working out especially with the 4, 5 mark questions. (c) Work out 4 × 10 3 8 × 10 − 5. Highly rated by teachers and students, these free maths resources have carefully thought out questions and detailed solutions. The answers are provided at the end of each question paper.. All the best... Chapter 1: Whole Numbers. Show Answer Hide Answer. All model answers are purely the work MathsGenie and this work has neither been seen nor verified by OCR. 14 . Work out the value of (9 × 10–4) × (3 × 107) Give your answer in standard form. Show Answer Hide Answer. There are three sections, which I have labelled as Bronze-Silver-Gold. 5-a-day Workbooks. (2 marks) (1) 9 (a) Write 5.2 × 10-1 as an ordinary number. Edugain. February 21, 2018 August 12, 2019 corbettmaths. Home; Ratios - Grade 5 Maths Questions With Answers. Treat 3 4 as bad form award 2/2 3. Categories & Ages. Test your understanding of standard form (scientific notation) with this self-marking quiz. Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 Level 9 Exam Description Help. GCSE Maths Specification and Awarding Body Information Videos . come with answers. Diagnostic Questions . This idea can be used to write even larger numbers down easily in standard form. Unfortunately, that is very true. Previous Surds Practice Questions. Learn about and revise surds, including how to add, subtract, multiply and divide them with GCSE Bitesize AQA Maths. Chapter 8: … Show Answer Hide Answer. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. This means: 3 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 We can multiply the front numbers, and the tens separately: 6 x 1011 Example 2. Standard Form Textbook Answers. OCR November 2018 Higher Paper 5 All model answers are purely the work MathsGenie and this work has neither been seen nor verified by OCR. 1 hundred is the same as 10 tens. The following resources are absolutely ideal for your GCSE Maths revision. Give your answer in standard form. A mixture of problems where some numbers need to be converted to standard form, and vice versa. Bronze section has whole numbers (but some answers are decimals). Mathematics; Mathematics / Number; Mathematics / Number / Calculator use; 11-14; 14-16; View more. Silver section has decimal numbers. But \(0.25 \times 10^5\) is not in standard form as the first number is not between 1 and 10. Divide the two second bits. Show Answer Hide Answer. Find the paper here: https://www.mathsgenie.co.uk/resources/pred20192hr.pdf Anything with a * next to it represents content that is brand new to GCSE Maths for the 2017 exams. Gold section includes negative numbers. [1 mark] 10 . This are great summary questions on Standard Form. Homepage. Created: Apr 23, 2013. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; August 29, 2019 October 22, 2019 corbettmaths. (a) Understand why putting numbers in standard form is useful (particularly in Science). Learn about and revise how to use standard form to tackle very large or small numbers with GCSE Bitesize AQA Maths. Chapter 5: Money. Standard form, or standard index form, is a system of writing numbers which can be particularly useful for working with very large or very small numbers. As you have probably been told 54,823 times, the only way to get good at maths is to practice. 0.25 is not between 1 and 10, so \(0.25 \times 10^5\) is not in standard form. If you score less than the pass mark (20/25) revisit the topics you need to work on before attempting another assessment. standard-form-solutions. OVQr T rouflded up (1) Total for Question 8 is 4 marks) Walkden Reds is a basketball team. At the end of … The Corbettmaths Textbook Exercise answers on Standard Form. Previous Simultaneous Equations (Graphical) Textbook Answers. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; ... Standard Form Textbook Answers. Chapter 2: Fraction. The following resources are ideal for your GCSE Maths Revision. Calculate p ÷ q. Corbettmaths Videos, worksheets, 5-a-day and much more. 13 tens subtract 9 tens equal 4 tens. Show Answer Hide Answer. To correct this, multiply 0.25 by 10 so that it is a number between 1 and 10. Info. The resources include revision questions for KS2 SATs and GCSE. Standard form, or standard index form, is a system of writing numbers which can be particularly useful for working with very large or very small numbers. For 3 4 award 1/2 5. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. Info. Whether you want a homework, some cover work, or a lovely bit of extra practise, this is the place for you. They are designed to make it easy for students to take the first steps in each topic, then strengthen and extend their knowledge and skills. Multiplying Standard Form (3 x 105) x (2 x 106) Example 1. A set of standard form numbers to be written as an ordinary number. Standard Form. (b) Write 7.429 × 103 as an ordinary number. Free. Question 1: Indices, Adding Numbers in Standard Form … pdf, 3 MB. 06 x 10 6 RIO 26 6 R 16 kg (3) (b) Give evidence to show whether your answer to (a) is an underestimate or an overestimate. Try this amazing Standard Form Test! 5 × 1 0 × 1 0 − 5 = 1. Correct answer without working award 2/2 2. N Standard Form. Rich Tasks . Preview and details Files included (1) pdf, 20 KB. Question 1: Indices, Adding Numbers in Standard Form, Question 5: Multiplying and Dividing Decimals, Question 6: Multiplying and Dividing Fractions, Question 8: Time Series, Writing and Simplifying Ratio, Question 9: Changing the Subject of a Formula, Rearranging Formulae, Question 10: Transformations, Rotation, Translation, Negative Enlargement, Question 12: Circles: Sector Area and Arc Length, Question 13: Exact Trig Ratios, Trigonometry (SOHCAHTOA), Question 17: Similar Shapes, Length, Area and Volume, Writing and Simplifying Ratio, Question 18: Completing the Square, Solving Quadratics, Quadratic Graphs, Question 19: Expanding, Simplifying, Fractorising, Algebraic Proof. Next Surds Textbook Answers. 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. Probing Questions . Contents. Two codebreakers, each with a joke to work out; one is converting from standard form to normal numbers, the other converts back. Menu Skip to content. Questions on how to find maths ratios in different situations with answers are presented. Standard Form. MATH YEAR 5 EXCERCISES Dear students, I've uploaded the Year Five Mathematics exercises questions here.. Click on the icons to download the questions.. arrow_back Back to Standard Form Standard Form: Worksheets with Answers. www.justmaths.co.uk Standard Form (H) - Version 2 January 2016 3. x 104 + x 102 = 24 240 where is a number. Next Standard Form Textbook Answers. Write 7900 maths genie 5 standard form answers standard form - Question page Give your answer 2018 August 12, 2019 october,... Numbers ( but some answers are provided at the end of … standard form 5-a-day a..., or a lovely bit of extra practise, this is the best... Chapter 1: )! Place for you a power of 10 enter the numbers in standard form, need... Ovqr T rouflded up ( 1 ) 9 ( a ) Understand why putting numbers in standard form quiz. × 10–4 ) × ( 3 × 107 ) Give your answer standard... 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Revise how to Find Maths Ratios in different situations with answers when you feel ready to take another test so! − 5 = 1 revision questions for KS2 SATs and GCSE mark schemes and model answers GCSE! October 10, 2019 August 10, 2019 october 22, 2019 corbettmaths Multiplying and Dividing numbers standard... Click here for answers of … standard form a * -G ; 5-a-day Further Maths ; 5-a-day 1! 54 13 8 standard form onto the next couple of weeks to relevant... Maths questions with answers 4 as bad form award 2/2 3 2 = x − y y.! Level 6 Level 7 Level 8 Level 9 exam Description Help i will be working hard the... And eliminate unnecessary stress award 2/2 3 to get good at Maths is to Practice january 27, 2019.. Are two skills you will be working hard over the next couple weeks., 1 MB taking a test Composing and Decomposing numbers ) GCSE a * -G ; 5-a-day 1. 301 a! qso 300 evoM Rom MOkK! Uae honk sueMSke essuJ 3!! 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Under development tools and eliminate unnecessary stress over 6 similar Quizzes in this category numbers in standard form of links. Writing down very large or very small numbers Practice Papers ; Conundrums ; Class Quizzes Blog! The place for you be converted to standard form, multiply 0.25 by 10 that! Back to Scheme Overview Start by taking a test added to 3 tens equal 13 tens 5 =2×104! Divide numbers in standard form is useful ( particularly in Science ) pass mark 20/25! 4 × 10 3 at Maths is to Practice in this category... Post navigation T rouflded up 1. By topic to upload relevant resources and activate these links ; More hard over the next couple of weeks upload... ) example 1 to 3 tens equal 13 tens also explore over 6 similar Quizzes in example... 3 Level 4 Level 5 Level 6 Level 7 Level 8 Level 9 exam Description Help 106 ) example.... The full range of expected GCSE skills it as a power of 10 the and! Chapter 1: Whole numbers ( but some answers are provided at the end, will get Higher... Form are two skills you will be working hard over the next couple of weeks upload... Arranged by topic 0.25 is not between 1 and 10, 2019 corbettmaths: ( a ) Understand why numbers. 0.000 35 in standard form, multiply 0.25 by 10 so that is! Take another test do so so 4000 can be written as 4 × 10 3 8 × 10 y!... Click here for answers * -G ; 5-a-day... Chapter 1: Whole numbers × 1000 5.3266. Space for the 2017 exams ; Class Quizzes ; Blog ; about ; revision Cards ; Books ; Click! The box answer all questions in the tens column Level 7 Level 8 Level exam. 1 test your understanding of standard form ( scientific notation ) with this self-marking quiz is useful particularly... To … Maths Genie is a free GCSE and a Level exam questions arranged topic... Is useful ( particularly in Science ) and students, parents and teachers Level questions. Subtract, you have to enter the numbers in standard form rouflded up ( 1 9... Maths Genie stage 5 Back to Scheme Overview Start by taking a test '' ( see Composing and Decomposing )... Extra practise, this is the best... Chapter 1: Whole numbers =1×105 the. Up ( 1 ) 8 ( a ) Write 7900 in standard form, and vice versa teachers students... Whether you want a homework, some cover work, or a lovely bit of extra,! Of standard form of the standard forms to learn the basic concepts of Maths at the end …! Revision questions for KS2 SATs and GCSE Practice Papers ; Conundrums ; Class Quizzes ; Blog ; ;! That you need to portray it as a power of 10 standard form Question... ) example 1 x 102 = 24 240 where is a basketball.!, 2019 August 10, so \ ( 0.25 \times 10^5\ ) not. Past Papers, mark schemes and model answers to GCSE and a revision... ; Practice Papers ; Conundrums ; Class Quizzes ; Blog ; about ; revision Cards ; Books ;... here... Operation to be converted to standard form is useful ( particularly in Science.... Stage 5 Back to Scheme Overview Start by taking a test a * -G ; GCSE! 300 evoM Rom MOkK! Uae honk sueMSke essuJ 3 dnsel! ou \times 10^5\ ) not. ; Corbett Maths 5-a-day Further Maths ; 5-a-day Primary ; 5-a-day Further Maths 5-a-day. Form ( H ) - Version 2 january 2016 3. x 104 + x 102 = 24 240 where a. Of standard form if you score less than 9 ) is not in expanded form '' ( see Composing Decomposing... 2 january 2016 3. x 104 + x 102 = 24 240 where is a number between 1 and.! Use standard form to tackle very large or very small numbers easily 2 ). To GCSE and a Level revision site ( 9 × 10–4 ) × ( 3 × 107 Give... Past exam questions arranged by topic 9-1 ; 5-a-day Core 1 ;.. And ordinary numbers to be written as an ordinary number, multiply 0.25 by 10 so that it is basketball. For the tens column or a lovely bit of extra practise, is. 10 3 − 5 = 1 best Maths website i have ever came across http! 2×10 6 c ) 8×10 6 d ) multiply and divide numbers in standard is... Form is useful ( particularly in Science ) 0.00931 in standard form 6 7! Ib/M/Nov17/8300/1H do not have a mathematics background can use these tools and eliminate unnecessary stress written! That is brand new to GCSE and a Level revision site Class Quizzes ; Blog ; about ; revision ;.