15.374 is between 15.37 and 15.38. If the digit is 5 or above we will round up (to 8), if it is 4 or below we will not (it will stay as 7). We need to work out if it is closer to 500 or 600. The answer is 55000. The Corbettmaths Practice Questions on calculating the Estimated Mean Example 11: Round 54671 to two significant figures. The first non zero digit is the 2 (the first significant figure), the second significant figure is the 6. endobj Estimation A collection of 9-1 Maths GCSE Sample and Specimen questions from AQA, OCR, Pearson-Edexcel and WJEC Eduqas. Further Maths; Practice Papers; Conundrums; Class Quizzes; Blog; About; Revision Cards; Books; September 26, 2019 corbettmaths. 1. This was taken from my 150 Page workbook which covers many more maths topics. &8I���J*1�� ],S*c�!3��7���){�a.�������7/Y��&��#S�2�AsT^E;���r17Q�~(v�Ld�P�;����pu8����ƹ����b��9ɢ[���j���]���� • Answer all Questions. We need to work out if it is closer to 12 or 13. We need to work out if it is closer to 380 or 390. a. If the digit is 5 or above we will round up (to 0.27), if it is 4 or below we will not (it will stay as 0.26). The Corbettmaths Practice Questions on Rounding. When we count significant figures we start counting from the first non zero digit. New Book your GCSE Equivalency & Functional Skills Exams View Maths Exams We need to work out if it closer to 15.37 and 15.38 When we round to one decimal place, we want just one digit after the decimal point. 549.7 is in between 500 and 600. %PDF-1.5 Example 9: Round 0.269 to two significant figures. 1. We can draw a line after the hundreds and look at the next digit, the tens. estimating, approximation, approximating. 386 is in between 380 and 390. Find free KS3 Maths revision materials today. (5 Marks) 4. [3 marks] We know there are 500 people in the company, but not how many are in the sample. .��!�"�:��M��2)2_��r��6Σ�X��m7^���\Dq-��\��W$6�� ����1�($�j��Q�:�}� o߁x����� 㓜f�u�X1Tv����W�%%�BS���'^�J���Po��� ����4 �q���׹�e�+s���h�V��ex�뎏p�w�*:�'�޽@�̝7����$���$��b0PE+P�w�0�*ѣtɆ��]p�4b|�M�G�N@�f�P �I���#�@���^��+���z�i`;���]e�q.Oa&Xa�C�R�-f)�+,%f�ۻ��e��Q߈D��A7�^�d"��~�tbӐTL��Y Maths, English and Science resources for KS3 can be found on this Key Stage Three dedicated page. So, instead of using the formula, we’re going to consider the fact stated just above: The first significant figure is the 1 (tens), the second significant figure is the 7 (ones) and the third significant figure is the 0 (tenths). • Diagrams are NOT accurately drawn, unless otherwise indicated. Example 1: Round 7.28 to the nearest whole number. Go to onmaths.com for more resources, like predicted GCSE Maths Papers, Topic Buster and challenge yourself against our Demon questions. 12.74 is in between 12 and 13. GCSE Edexcel Maths Number Estimation. Estimate the value of 4.34 ×19.2 11.2..... [2] 2. Questions are labelled with Foundation, Higher and Calculator tags allowing students to tackle specific questions and possibly jump up levels to harder questions. We can draw a line after two significant figures places and look at the next digit, the thousandths. Estimate the value of 4.34 ×19.2 11.2..... [2] 2. Perfect for projecting in the classroom. We can draw a line after the tens and look at the next digit, the ones. 1259 is in between 1200 and 1300. x��YQs�8~�L����,�"E�tz��i�;ӽv��>d���r�kl���l~O���h����zmǎ%��G Rӳ�~�(g{����l�/g7՜]M/7_?M/�V�w��r]�����=���*����s���9{qyz2}��I����� g)��L�"�2��(�.W ��Cήw�')��+S_�>=��X��]�~zr����?=ao��4 ��f�߬�(_m6�J���$�y�4a�� Preview and details Files included (7) A GCSE Maths Worksheet covering Estimation. If the digit is 5 or above we will round up (to 15.38), if it is 4 or below we will not (it will stay as 15.37). When we count significant figures we start counting from the first non zero digit. Self marking questions ranging from A* to G grade. We need to work out if it is closer to 12 or 13. We can draw a line after three significant figures places and look at the next digit, the hundredths. If the digit is 5 or above we will round up (to 2.7), if it is 4 or below we will not (it will stay as 2.6). Do the paper online: http://onmaths.com/mock_exams/estimation-2/ Topic Buster: Estimation Learn how to do estimation GCSE maths questions. The exact value of the answer is 42.899970209 prizes . GCSE Edexcel Maths Number Estimation (no rating) 0 customer reviews. Learn about and revise approximation using a range of rounding and estimation techniques with this BBC Bitesize GCSE Maths Edexcel study guide. We can draw a line after one decimal place and look at the next digit, the hundredths. Mr Jeffery going through the idea of making an estimation for difficult calculations. The answer is 1300. If the digit is 5 or above we will round up (to 390), if it is 4 or below we will not (it will stay as 380). endobj %���� <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 9 0 R] /MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The answer is 390. Each ticket for the event cost £19.95 Paul sold 395 tickets. �e����}�O����Od���ng�>"Z����D7�XG�,��&VQr��11�l�L$F4l�>�E�D�E�h5J4�&�=�W�x�w˸ �k_"�@ 7�l�iR������=�E����x0�rP��L��;�k�Y�}H m�ӓ�/.��;MR�'3���]U�D We have a 7 in the tenths, so we will round up. The table below gives some information about sizes of the groups. Example 10: Round 17.045 to three significant figures. GCSE Maths Specification and Awarding Body Information Videos . Suitable for all the big examination boards including AQA, Edexcel, OCR and WJEC. We have a 4 in the hundredths, so we do not round up. Estimate the force on an object which has mass 5.87 kg and acceleration 24.02 m/s ^2.. Non-calculator edexcel topic. Example 4: Round 1593 to the nearest ten. Maths Genie is a free GCSE and A Level revision site. Instructions Use black ink or ball-point pen. Example 2. frequency tables <> 1. GCSE (1 – 9) Estimation Name: _____ Instructions • Use black ink or ball-point pen. 1 0 obj This website and its content is subject to our Terms and Conditions. When we count significant figures we start counting from the first non zero digit. If the digit is 5 or above we will round up (to 600), if it is 4 or below we will not (it will stay as 500). If the digit is 5 or above we will round up (to 17.1), if it is 4 or below we will not (it will stay as 17.0). If the digit is 5 or above we will round up (to 13), if it is 4 or below we will not (it will stay as 12). Example: The formula for the force, F on a moving object is F = ma, where m is the mass and a is the acceleration. GCSE QUESTIONS. 7.28 is in between 7 and 8. This is the Rounding and Estimation GCSE Maths Revision for AQA, OCR and Edexcel GCSE Maths. Rounding to the nearest whole number is the same as rounding to the nearest one. A growing bank of randomly generated GCSE exam style questions with full worked solutions. Estimation Textbook Exercise Click here for Questions . Paul paid costs of £6000 He gave all money left to the charity. The answer is 7. We have a 2 in the tenths, so we will not round up. Odette has taken a stratified sample of people who work at her company based on gender. Created: May 28, 2018. Read more. Detailed solutions are provided which use colour to help explain the methods used. We can draw a line after the ones and look at the next digit, the tenths. Type 2: Estimating with Equations Estimating with equations is a little bit more difficult, since we also have to interpret the question. The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards. Worksheets with answers . 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