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. If it is 5 or more, then we round up the cut-off digit. The 1st significant figure in this case is 2 and moving two places along we see that the 4 is the 3rd significant figure. Angles are rarely rounded to more than 1 decimal place. Here, 7 is more than 5, so we round the cut-off digit, 8, up to 9. Attempt every question. Lessons. 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. The 1st significant figure is 4 as the first 2 digits are zeros. Step 2: Look at the first digit after the cut-off point. Count the number of decimal places you need. The cut-off digit becomes zero, and the digit before it gets increased by 1. Finally, ignoring all the digits after the cut-off point, we get that. Foundation / higher: Number: Number system. If it is below 5, then we keep the cut-off digit the same. 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. Rounding is a process of simplifying a number without changing the value of it too much. 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. 0.04529 rounded to 2 significant figures is 0.045. Rounding Significant Figures Practice Questions Click here for Questions . 3. Step 3: All the digits after the cut-off point we ignore. 2. Here, 2 is less than 5, so we keep the cut-off digit, 5, the same. However, as the question asked for 2 decimal places both numbers are left. Here, we are rounding to 1 decimal place so it is the 1st digit after the decimal point we are interested in. GCSE maths revision. Beat the clock; Find the primes; Key word countdown; Nasty negatives; Odd one out; Times tables dash; QUESTION BANK; FORMULAE; GLOSSARY; CONTACT; Worksheet - Rounding to significant figures. Past paper exam questions organised by topic and difficulty for Edexcel GCSE Maths. Students then form groups of 2 or 3 and seelct a sheet with an estimating task, challenge levels vary between 1 and 3. gcse questions. If it is below 5, then we keep the cut-off digit the same. Here it is 2. Decimal PlacesOften you are asked to write an answer to a given number of decimal places (be careful to read the question properly! In many GCSE Maths exam questions you will be asked to round a number to a specified number of decimal places or significant figures. So, in this case, the 9 goes to zero and the 3 before it becomes 4. Here is the question: Each of the numbers in the calculation 270 * 1.5 / 0.45 has been rounded to two significant figures. Watch these videos to learn the correct way of rounding when you are asked to estimate a calculation. Username: Password: Register? Here it is the 2. Rounding and estimating are two ways to make numbers easier to manage. the cut-off digit gets increased by 1, so in this case the 3 will become a 4. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards ; Books; September 5, 2019 corbettmaths. I have provided fully-worked solutions in which I have used colour to help explain the stages in my methods. Rounding … In this case, that is the 4. The first non-zero term is 5, so this is our \, 1st significant figure. Expected in November 2016, the ultimate GCSE Computing companion, with Scheme of Work and 1000s of questions from OCR and teachers. Year 1 AS Pure; Year 2 A Level Pure; Extension Questions; New A level Applied. 750 questions from the Royal … Check your answers seem right. However, as we are rounding up 9 to 10, we have to carry the 1 over to the units column, so we get. Then look at the next digit along. The 1st significant figure is 8, the 2nd is 5. 2. Currency should be rounded to 2 decimals to denote pounds and pence e.g. I think you have to minus significant figures or work out an approximation - but it's very confusing. northwales 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. Here, we are rounding to 2 decimal places so it is the 2nd digit after the decimal point we are interested in. 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 it's 4 or below just write down the answer with the right amount of decimal places. 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. 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. Grade 8/9 Topics. Practice Questions; Post navigation. Exact Calculations (H) JustMaths GCSE Questions keyboard_arrow_up. Make sure you are happy with the following topics before continuing. Question 2: Round 97.96 to 1 decimal place. to the nearest 10, to 1 decimal place). So, 3.6874 rounded to 2 decimal places is 3.69. Then look at the next digit along. Here it is the 7. Four operations, inverse operations and order of o… 15 practice questions. REVISION NOTES; WORKSHEETS . Past paper exam questions organised by topic and difficulty for AQA GCSE Maths. Starts with rounding practise (assumes students have already covered this) then moves on to a modelled example of estimating. 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. Example: Round 0.04529 to 2 significant figures. 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 :] Decimals GCSE Maths Tests. If the last decimal to round is 5 or … 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! The first digit, 2, is in hundreds, but the second digit, 3, is in tens, so that will be our cut-off digit. Check them out below. In many GCSE Maths exam questions you will be asked to round a number to a specified number of decimal places or significant figures. Donʼt spend too long on one question. If the question does not specify how many decimal places to round to just use your own judgement. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; August 29, 2019 corbettmaths. We do this by taking a number and working out which of the “simpler” numbers it is closest to. The cut-off point is after the 8 and before the 7. Diagnostic Questions . The next significant figures immediately follows, and so on….. Rounding numbers, significant figures, decimal places, converting fractions to decimals, converting decimals to fractions, rational numbers, reciprocals, expansions of repeating decimals HIGHER FOUNDATION . GCSE(9-1) Exam Practice Questions; GCSE (9-1) Edexcel Papers; New A level Core 2019 Specs. Click here for Answers . Interactive Resources . If it is below 5, then we keep the cut-off digit (i.e. Or 7.48.65 – becomes 7.49 (as the following 6 is greater than 5). Maths-Creator-QA TEACHER. The cut-off point is between the 5 and the 2. If you round numbers too early, i.e. Here, we are rounding to the nearest thousand so it is the 3rd digit we are interested in. For example 1.3721 – becomes 1.37 (as the following 2 is less than 5). Further Maths 1; Further Maths 2; Extension Questions; A Level Practice Papers 2019 Specs; Tuition; Select Page. This is less than 5, so we round down and the cut-off digit stays the same. Back to Top. Here, this is the 2nd decimal place. A worksheet for practising the rounding of numbers to the nearest hundred. 8, is our 2nd significant figure and thus is our cut-off digit. Rounding to significant figures. We have a range of learning resources to compliment our website content perfectly. To do this simply count the number of decimal places required (in the examples below its 2). The problem is, increasing a 9 by 1 makes 10, so what do we do? To round up or down we have to consider the value of the digit to its immediate right which in this case is 9. Question 4: Round 1.0093 to 3 significant figures. Click here for Answers . To do this simply count the number of decimal places required (in the examples below its 2). £3.69. 4. Test Name Average score; START TEST Decimals I Click for details. Select Difficulty Level: NORMAL AMBITIOUS CHALLENGING . The digit after the 5 is a 2. The digit after the 4 is a 6, which means that we round up and increase the cut-off digit by 1 so the 4 becomes a 5, giving us, 13.746 rounded to 2 decimal places is 13.75. One way we may be asked to round a number is to a given number of decimal places (d.p.). Then, turning all the digits after the cut-off digit into 0‘s, we get. Year 1 AS Applied; Year 2 A Level Applied; New Further Maths . 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? I Rounding Giving the complete number for something is sometimes unnecessary. Then, ignoring all the digits after the cut-off point, we get, 4.398 rounded to 2 decimal places is 4.40. If we’re rounding to 2 decimal places, then the cut-off digit is before the 2nd decimal place, i.e. 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. 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. Rich Tasks . We do this by taking a number and working out which of the “simpler” numbers it is closest to. 0.00589 rounded to 2 significant figures is 0.0059. GCSE Maths Specification and Awarding Body Information Videos . Another way we may be asked to round a number is to a given number of significant figures (sf). 8,529 rounded to 2 significant figures is 8,500. Example: Round 3.6874 to 2 decimal places. 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. Practice Questions with Answers on the topic of Rounding to the nearest 10, 100 or 1000. Maths-Creator-QA TEACHER. Questions on Rounding for GCSE Solutions can be found at http://www.mathsnote.com Model answers & video solution for Rounding & Estimation. Step 3: All the digits after the cut-off digit we turn into 0‘s. Then look at the next digit, if its 4 or below just write the number down leaving the last digit the same. The digit after it is an 8, so we must round up the cut-off digit. Maths-Creator-QA TEACHER. If it’s 4 or less then just write in the number with the correct amount of decimal places. Question 3: Round 0.02345 to 3 significant figures. View all Products, Not sure what you're looking for? … thank-you! Here this is after the 2nd significant figure. These should give you a clearer idea of how content may be presented and the increased level of challenge. 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. Round the following to the … Rounding Numbers. the number before the cut-off point) the same. Practice Questions; Post navigation. 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). rounding_to_the_nearest_100.pdf: File Size: 274 kb: File Type: pdf: Download File. This sheet starts off with number line based questions to aid understanding of this important topic. See how our practice questions work with this 17-question quiz on Estimation, Rounding and Limits for AQA GCSE Maths. The lovely Mel from JustMaths has put together themed collections of questions taken from the awarding bodies’ sample assessment materials and practise papers. Model answers & video solution for Rounding & Estimation. The 1st significant figure of a number is the first digit that isn’t a 0. If the last decimal to round is 5 or above, write in the number with the last decimal place up by 1. Question 1: Round 560,180 to the nearest thousand. Step 2: Look at the first digit after the cut-off point. If the number is 5 or above just put the last digit up by 1. If you round numbers too early, i.e. Rounding and estimating are related skills. 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. Finally, we may be asked to round a number to the nearest whole number, 10, 100 etc. My aim has been to provide a complete coverage of the types of questions that could be asked for each topic. rounding, estimation and checking > revision > gcse questions. rounding_to_the_nearest_100_answer_sheet.pdf: File Size: 277 kb: File Type: pdf: Download File. the 2nd number after the decimal point. As 6 is greater than 5, we round up. Showing top 8 worksheets in the category - Gcse Rounding And Estimation. upper and lower bounds For instance, the attendance at a football match might be 23745. The 1st significant figure in this case is 1 and moving two places along we see that the 0 is the 3rd significant figure. To 1 significant figure (1s.f) this would be 30000. Now we look to the digit after this: it is a 5, which means that we round up, i.e. Free resources for teachers and students to hopefully make the teaching and learning of mathematics a wee bit easier and more fun. If it's 5 or above write down the number but put your last decimal place up by one. Ordering and place value: Number: Maths: GCSE (9:1) 16 practice questions. 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. Estimation Questions. Significant figures involve using all the digits specified not just the decimal places. If the last digit is 9 then you need to put a zero in the last column and add 1 to the previous number. Question 5: Round 55.099 to 2 decimal places. Number; Algebra; Geometry; Statistics; Functional; Search; MATHS GAMES. As 9 is greater than 5, we round up. Estimation, rounding and limits: Number: Maths: GCSE (9:1) Created by. Rounding Practice Questions Click here for Questions . When we round numbers we are taking away their accuracy. To round up or down we have to consider the value of the digit to its immediate right which in this case is 1. Some GCSE exam questions may ask you to give the answer in a simplified form. Rounding and Estimating (H) 61. DrFrostMaths provides an online learning platform, teaching resources, videos and a bank of exam questions, all for free. 30 difficult GCSE quiz questions to see if you could get a high pass on a school exam It's your opportunity to either redeem yourself for high school or prove you've still got it! This is easier than for decimal places and significant figures. The 2nd digit after the decimal point, the 9, is our cut-off digit. Worksheets with answers . The digit after the 8 is a 9, which is bigger than 5, and so we round up, increasing the cut-off digit by 1, making the 8 into a 9. Step 1: Identify the tens digit, here it will be the second 1, Step 2: Look at the digit after the tens column. Begin by counting from the first number greater than zero, until you have the number of figures that you need. Read our guide. Look at the next digit. Here, 2 is less than 5 so we do not round up. Decimal Places . Rounding is used to shorten numbers by either increasing or decreasing a number to the next digit (e.g. To round up or down we have to consider the value of the digit to its immediate right which in this case is 6. Example: Round 4.398 to 2 decimal places. suggest you remove these 2 examples. 5. The rounded number is an estimate of the original. Read each question carefully before you begin answering it. Take quiz Explore GCSE practice questions by subject & exam board ).What you need to do:1. If it’s 4 or less then just write in the number with the correct amount of decimal places. 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. Rounding is a process of simplifying a number without changing the value of it too much. Has local interest topics included so unless you know Northampton (where?) 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