Rounding, Estimation and Bounds

Introduction

Dr Frost Maths (includes slides and worksheets)

• Rounding and Estimation

  • Yr7 Round and Approximation

    • Ex1 - decimal places, significant figures

    • Ex2 - approximation

  • GCSE bounds

    • Ex1 - error interval, truncation

    • Ex2 - bound calculations, suitable degree of accuracy

• Go teach maths powerpoints and worksheets

• CP3 maths powerpoint and worksheets

Practice

Transum

• Rounding Ten: Round the numbers to the nearest whole number or the given power of ten.

• Rounding DP: A self marking exercise requiring students to round numbers to a given number of decimal places.

• Rounding SF: A self marking exercise requiring students to round numbers to a given number of significant figures.

• Rough Answers: An exercise on rounding values in a calculation to find an approximate estimate of the answer.

• Upper and Lower Bounds: Determine the upper and lower bounds when rounding or truncating quantities used in calculations.

• Rounding Snap: If the last card put down equals the previous card to the nearest whole number then all players race to shout SNAP!

• Estimation Golf: Play a round of golf using your estimation skills rather than golf clubs.

Corbett Maths (Answers)

• Rounding: to whole numbers   Video 276     Practice Questions    Textbook Exercise

• Rounding: to nearest 10    Video 277a      Practice Questions    Textbook Exercise

• Rounding: to nearest 100    Video 277b     Practice Questions    Textbook Exercise

• Rounding: to decimal places   Video 278     Practice Questions     Textbook Exercise

• Rounding: significant figures  Video 279a    Practice Questions    Textbook Exercise

• Rounding: highest/lowest   Video 280    Practice Questions    Textbook Exercise

• Number: estimation   Video 215     Practice Questions    Textbook Exercise

• Sensible estimates     Video 285    Practice Questions    Textbook Exercise

• Limits of accuracy      Video 183     Practice Questions    Textbook Exercise

• Limits of accuracy:  applying     Video 184     Practice Questions    Textbook Exercise

Dr Austin Maths

• Rounding to Decimals Places Practice Strips (Editable Word | PDF | Answers)

• Rounding to Decimal Places Decode the Joke (Editable Word | PDF | Answers)

• Rounding to Decimal Places Pixel Picture (Editable Word | PDF | Answers)

• Rounding to Significant Figures Practice Strips (Editable Word | PDF | Answers)

• Rounding to Significant Figures Pixel Picture (Editable Word | PDF | Answers)

• Rounding to Significant Figures Practice Grid (Editable Word | PDF | Answers)

• Rounding Crack the Code (Editable Word | PDF | Answers)

• Estimation and Approximation Practice Strips (Editable Word | PDF | Answers)

• Estimation Practice Grid (Editable Word | PDF | Answers)

• Estimation Odd One Out (Editable Word | PDF | Answers)

• Error Intervals and Bounds Practice Strips (Editable Word | PDF | Answers)

• Upper and Lower Bounds Fill in the Blanks (Editable Word | PDF | Answers)

• More Upper and Lower Bounds Fill in the Blanks (Editable Word | PDF | Answers)

• Upper and Lower Bounds Decode the Joke (Editable Word | PDF | Answers)

• Upper and Lower Bounds Odd One Out (Editable Word | PDF | Answers)

• Calculating with Bounds Practice Strips (Editable Word | PDF | Answers)

• Calculating with Bounds Practice Grid (Editable Word | PDF | Answers)

• Calculating with Bounds Crack the Code (Editable Word | PDF | Answers)

• Upper and Lower Bounds Revision Practice Grid (Editable Word | PDF | Answers)

Increasingly Difficult Questions

• N/A

Maths4everyone (includes practice/ exam questions)

• Rounding and Estimating

Maths Links exam questions

Rounding

• Ken Stafford:  Past Paper Qs  :  Solutions

• Maths Genie  :  Questions  :  Answers

• Corbettmaths  :  Questions  :  Answers

• Corbett Textbook  :  Questions  :  Answers

• Maths Made Easy  :  Questions  :  Answers

• Maths Upgrade  :  Questions  :  Answers

Estimation

• Ken Stafford:  Past Paper Qs  :  Solutions

• Maths Genie  :  Questions  :  Answers

• Corbett Practice  :  Questions  :  Answers

• Corbett Textbook  :  Questions  :  Answers

• Maths Upgrade  :  Questions  :  Answers

• My GCSE Maths : Questions  (Ans. inc.)

• Hannah Kettle  :  Questions  :  Video Solutions

• Metatutor  :  Questions  :  Answers

• Maths DIY  :  Questions  :  Answers

• Maths Takeaway  :  Questions  :  Answers

• Dr Austin  :  Questions  :  Answers

Bounds

• Ken Stafford:  Past Paper Qs  :  Solutions

• Maths Genie  :  Questions  :  Answers

• Maths4Everyone  :  Questions  :  Answers

• Corbett Practice  :  Questions  :  Answers

• Corbett Textbook  :  Questions  :  Answers

• Maths Made Easy  :  Questions  :  Answers

• Dr Frost : Questions (Ans. inc.)

• Maths Upgrade  :  Questions  :  Answers

• 1st Class Maths  :  Questions  :  Answers

• Maths4EveryOne  :  Questions  :  Answers

• Metatutor  :  Questions  :  Answers

• Maths Takeaway  :  Questions  :  Answers

• Dr Austin  :  Questions  :  Answers

Extension

• N/A

Other Resources

Rounding

• Rounding lessons - Boss Maths

• Variationtheory.com rounding tasks

• Place Value Booklet, Slides and Activities - MathsPad

• Rounding numbers code breaker - mathspad.co.uk

• Rounding to powers of 10 - Don Steward

• Rounding to different amounts - Don Steward

• Simple rounding worksheets including number lines - Math Salamanders

• Rounding Pixel Puzzle 1 and Puzzle 2 - MissBrookesMaths  (corrections here)

• Rich rounding tasks - blog post by Dan Draper

• Significant Figures - Ashton Coward

• Truncation (post and resources) - Jemma Sherwood

• Rounding spiders - alutwyche on TES

Estimating

• Estimating answers lesson - Boss Maths

• Estimating powers and roots - Boss Maths

• Scaffolded estimation worksheet

• Estimation (Activity 6.4) - CIMT

• Approximation and Estimation Check In - OCR

• Approximation - cazoommathsworksheets.com 

• Estimating Sums - Median Don Steward

• Calculations - MissBrookesMaths

• Calculations - Decimals - MissBrookesMaths

• Estimation collect a joke - Dan Walker on TES

• Estimating square roots - Mr Thompson on TES

Upper and Lower Bounds

• Upper and lower bounds lesson - Boss Maths

• Error intervals lesson - Boss Maths

• Upper and lower bounds questions - The Chalk Face

• Painting bounds - The Chalk Face

• Error intervals exercises - @alcmaths

• Upper and lower bounds - mathshelper.co.uk

• Highest and lowest bounds - Median Don Steward

• Errors Student Sheet (& notes) - Nuffield Foundation

• Lesson plan: bounds and speed - Colin Foster

• Bounds and Error Intervals - @dooranran on TES

• Bounds lesson - Tick Tock Maths on TES

• GCSE bounds teaching advice - J Morgan