the cut-off digit gets increased by 1, so in this case the 3 will become a 4. Decimal Places . Rounding to significant figures. I Rounding Giving the complete number for something is sometimes unnecessary. If you round numbers too early, i.e. rounding, estimation and checking > revision > gcse questions. If the number is 5 or above just put the last digit up by 1. Test Name Average score; START TEST Decimals I Click for details. View all Products, Not sure what you're looking for? The 2nd digit after the decimal point, the 9, is our cut-off digit. Decimals GCSE Maths Tests. If it’s 4 or less then just write in the number with the correct amount of decimal places. Here, we are rounding to 2 decimal places so it is the 2nd digit after the decimal point we are interested in. Then look at the next digit along. The digit after the 5 is a 2. Exact Calculations (H) JustMaths GCSE Questions keyboard_arrow_up. Free resources for teachers and students to hopefully make the teaching and learning of mathematics a wee bit easier and more fun. Check them out below. Look at the next digit. upper and lower bounds In many GCSE Maths exam questions you will be asked to round a number to a specified number of decimal places or significant figures. The lovely Mel from JustMaths has put together themed collections of questions taken from the awarding bodies’ sample assessment materials and practise papers. Attempt every question. One way we may be asked to round a number is to a given number of decimal places (d.p.). Step 3: All the digits after the cut-off digit we turn into 0‘s. 2. £3.69. Angles are rarely rounded to more than 1 decimal place. Here, we are rounding to the nearest thousand so it is the 3rd digit we are interested in. Username: Password: Register? However, as we are rounding up 9 to 10, we have to carry the 1 over to the units column, so we get. To round up or down we have to consider the value of the digit to its immediate right which in this case is 1. 8, is our 2nd significant figure and thus is our cut-off digit. 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. The 1st significant figure is 8, the 2nd is 5. Example: Round 0.04529 to 2 significant figures. Worksheets with answers . rounding_to_the_nearest_100_answer_sheet.pdf: File Size: 277 kb: File Type: pdf: Download File. Diagnostic Questions - Rounding 6 ♥ (6) AQA have teamed up with Craig Barton's Diagnostic Questions website to share free diagnostic question assessment for our new 2017 GCSE Maths specification. Example: Round 3.6874 to 2 decimal places. If the question does not specify how many decimal places to round to just use your own judgement. Step 2: Look at the first digit after the cut-off point. Watch these videos to learn the correct way of rounding when you are asked to estimate a calculation. The first digit, 2, is in hundreds, but the second digit, 3, is in tens, so that will be our cut-off digit. GCSE Maths Specification and Awarding Body Information Videos . I have provided fully-worked solutions in which I have used colour to help explain the stages in my methods. Here this is after the 2nd significant figure. Maths-Creator-QA TEACHER. Practice Questions; Post navigation. To round up or down we have to consider the value of the digit to its immediate right which in this case is 9. However, as the question asked for 2 decimal places both numbers are left. 5. Step 3: All the digits after the cut-off point we ignore. So, 3.6874 rounded to 2 decimal places is 3.69. To 1 significant figure (1s.f) this would be 30000. Exam Style Questions Ensure you have: Pencil, pen, ruler, protractor, pair of compasses and eraser You may use tracing paper if needed Guidance 1. Copyright © 2004 - 2021 Revision World Networks Ltd. Rounding Significant Figures Practice Questions Click here for Questions . Four operations, inverse operations and order of o… 15 practice questions. Model answers & video solution for Rounding & Estimation. The 1st significant figure in this case is 1 and moving two places along we see that the 0 is the 3rd significant figure. Further Maths 1; Further Maths 2; Extension Questions; A Level Practice Papers 2019 Specs; Tuition; Select Page. However, as we are rounding up 9 to 10, we have to carry the 1 over to the units column, so we get, 55.099 rounded to 2 decimal places is 55.10. Here, 2 is less than 5, so we keep the cut-off digit, 5, the same. Past paper exam questions organised by topic and difficulty for Edexcel GCSE Maths. Donʼt spend too long on one question. Here it is the 2. REVISION NOTES; WORKSHEETS . This is easier than for decimal places and significant figures. Here, we are rounding to 3 significant figures so it is the first non-zero digit and the two digits that follow it that we are interested in. 0.04529 rounded to 2 significant figures is 0.045. We have a range of learning resources to compliment our website content perfectly. Select Difficulty Level: NORMAL AMBITIOUS CHALLENGING . New GCSE questions from AQA, Edexcel and OCR, Year 7 Baseline tests, Year 6 SATs Revision, Core 1 Collection, plus questions from Cambridge University Press, UKMT, Oxford University, and 1000s more created by teachers. If the last digit is 9 then you need to put a zero in the last column and add 1 to the previous number. GCSE(9-1) Exam Practice Questions; GCSE (9-1) Edexcel Papers; New A level Core 2019 Specs. Has local interest topics included so unless you know Northampton (where?) Click here for Answers . suggest you remove these 2 examples. Past paper exam questions organised by topic and difficulty for AQA GCSE Maths. If it is below 5, then we keep the cut-off digit the same. Rounding is a process of simplifying a number without changing the value of it too much. Maths-Creator-QA TEACHER. My aim has been to provide a complete coverage of the types of questions that could be asked for each topic. The 1st significant figure in this case is 2 and moving two places along we see that the 4 is the 3rd significant figure. For each of the 3 ways of rounding, if we are required to round up a 9, then we round the 9 to a 0 and increase the digit before it by 1 (carry the 1 to the left). Rich Tasks . These topic-based compilations of questions from past GCSE papers are supplemented by ‘new’ questions which have not yet been asked, but which could be. Year 1 AS Pure; Year 2 A Level Pure; Extension Questions; New A level Applied. To round up or down we have to consider the value of the digit to its immediate right which in this case is 9, so we round up, 1.0093 rounded to 3 significant figures is 1.01. If the last decimal to round is 5 or above, write in the number with the last decimal place up by 1. Rounding Numbers. Read our guide. Rounding … 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. 2. Question 2: Round 97.96 to 1 decimal place. Question 4: Round 1.0093 to 3 significant figures. For instance, the attendance at a football match might be 23745. Question 3: Round 0.02345 to 3 significant figures. The next significant figures immediately follows, and so on….. Grade 8/9 Topics. Rounding and Estimating (H) 61. Students then form groups of 2 or 3 and seelct a sheet with an estimating task, challenge levels vary between 1 and 3. Here it is 2. To round up or down we have to consider the value of the digit to its immediate right which in this case is 5, so we round up, 0.02345 rounded to 3 significant figures is 0.0235. In many GCSE Maths exam questions you will be asked to round a number to a specified number of decimal places or significant figures. Here is the question: Each of the numbers in the calculation 270 * 1.5 / 0.45 has been rounded to two significant figures. Rounding and estimating are related skills. 8,529 rounded to 2 significant figures is 8,500. When we round numbers we are taking away their accuracy. Some GCSE exam questions may ask you to give the answer in a simpliﬁed form. Example: Round 4.398 to 2 decimal places. ok here is the question: Estimate the answer to : (29.42 x 0.0941) / (15.2 x 8.42) I understand the question i just don't know how many decimal places to round it to...please talk me through it! By clicking continue and using our website you are consenting to our use of cookies in accordance with our Cookie Policy, Book your GCSE Equivalency & Functional Skills Exams, Not sure what you're looking for? Question 1: Round 560,180 to the nearest thousand. Read each question carefully before you begin answering it. Starts with rounding practise (assumes students have already covered this) then moves on to a modelled example of estimating. 3. Find the least possible value of the calculation as a percentage of the exact value of 270 * 1.5 / 0.45 An explanation would be useful :] Back to Top. to the nearest 10, to 1 decimal place). If it is below 5, then we keep the cut-off digit (i.e. Here, 7 is more than 5, so we round the cut-off digit, 8, up to 9. Practice Questions with Answers on the topic of Rounding to the nearest 10, 100 or 1000. 249.5| 0 46 to 1 decimal place is 249.5 249.50| 4 6 to 2 decimal places is 249.50 Notice that 249.50 = 249.5. Diagnostic Questions . The method of rounding to a significant figure is often used as it can be applied to any kind of number, regardless of how big or small it is. … Question 5: Round 55.099 to 2 decimal places. Questions on Rounding for GCSE Solutions can be found at http://www.mathsnote.com Practice Questions; Post navigation. A worksheet for practising the rounding of numbers to the nearest hundred. Model answers & video solution for Rounding & Estimation. In response to requests from others I have taken a look at a set of typical GCSE questions on rounding and estimation, and worked through the solutions. We do this by taking a number and working out which of the “simpler” numbers it is closest to. To round up or down we have to consider the value of the digit to its immediate right which in this case is 6. If it’s 4 or less then just write in the number with the correct amount of decimal places. Check your answers seem right. the number before the cut-off point) the same. In this case, that is the 4. The cut-off point is between the 5 and the 2. For example 1.3721 – becomes 1.37 (as the following 2 is less than 5). Make sure you are happy with the following topics before continuing. If it is 5 or more, then we round up the cut-off digit. Foundation / higher: Number: Number system. We do this by taking a number and working out which of the “simpler” numbers it is closest to. The 1st significant figure of a number is the first digit that isn’t a 0. This is less than 5, so we round down and the cut-off digit stays the same. Finally, ignoring all the digits after the cut-off point, we get that. We use the same method, but if it asks to round to the nearest 10 for example, then our cut-off digit will be the digit in the tens column. If it is below 5, then we keep the cut-off digit the same. As 1 is less than 5, we round down and so the zero stays the same and we make the rest of the digits zero, 560,180 rounded to the nearest thousand is 560,000. Click here for Answers . Maths-Creator-QA TEACHER. Expected in November 2016, the ultimate GCSE Computing companion, with Scheme of Work and 1000s of questions from OCR and teachers. Begin by counting from the first number greater than zero, until you have the number of figures that you need. These should give you a clearer idea of how content may be presented and the increased level of challenge. Here, we are rounding to 1 decimal place so it is the 1st digit after the decimal point we are interested in. The rounded number is an estimate of the original. Then, turning all the digits after the cut-off digit into 0‘s, we get. DrFrostMaths provides an online learning platform, teaching resources, videos and a bank of exam questions, all for free. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; August 29, 2019 corbettmaths. Here, this is the 2nd decimal place. Interactive Resources . during a calculation, then the answer you get at the end may be incorrect, so only round at the end of an answer, and not during a calculation, unless the question specifically asks you to. 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