Rounding

Tutorial Videos

Rounding to nearest whole number – Corbettmaths

Corbett Maths Rounding to Nearest Whole Number

Rounding to the nearest ten – Corbettmaths

Corbett Maths Rounding to the Nearest Ten

Rounding to the nearest hundred – Corbettmaths

Corbett Maths Rounding to the Nearest Hundred

Online Platforms (with Videos & Exercises)

Activities & Resources

• Pixi Maths
  • Introduction to Rounding ppt
  • Rounding to One Decimal Place Jigsaw
• Andy Lutwyche
  • Money Issues
• Don Steward
  • Rounding to Different Amounts✦
  • Rounding to Powers of 10✦
• Transum
  • Rounding Ten
  • Rounding Snap
• Mr Draper Maths Rounding Defamiliarisation
  • Midpoints and Rounding to Non-Standard Integers
• Go Teach Maths
  • Rounding Whole Numbers
• Ticktock Maths
  • Rounding to the Nearest 10 100 and 1000 lesson (slides)
• Pondering Planning in Mathematics (Paul Rowlandson)
  • Rounding Numbers at the Halfway Point (blog post) · slides
• Standards Unit (DfES)
  • Standards Unit N3: Rounding Numbers (Standards Unit, DfES; PDF

Worksheets

• Corbettmaths
  • Rounding Practice Questions & Solutions
  • Rounding: To Nearest Whole Number Worksheet & Solutions
  • Rounding Worksheet & Solutions
• Maths 4 Everyone
  • Rounding KS2 SATS Questions and Solutions
• Pixi Maths
  • Rounding to 10, 100, 1000 Codebreaker
  • Rounding to Nearest Integer RAG
• Self Marking Sheets by Phil Rhodes
  • Rounding to 10, 100, 1000 Excel File
• CIMT MEP (online self-checking)
  • Place Value & Rounding
• Access Maths
  • Rounding Fluency & Reasoning Sheet
• Pret Homework (@DIRT_expert)
  • Rounding (@DIRT_expert, ppt)

Dr Frost Video

Key Skill – Round a Number to the Nearest Whole, Ten, Hundred or Thousand

K62: Round a Number to the Nearest Whole, Ten, Hundred or Thousand.

Dr Frost Slides & Activities

Dr Frost Slides (1-4 & 10)

Extra Questions

• Dr Frost Questions

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 37a: Round a number to the nearest ten.
• 37b: Round a number to the nearest hundred.
• 37c: Round a number to the nearest thousand.
• 37d: Round a number to a given place value beyond thousands.
• 75a: Round a number to the nearest whole.
• 37: Exam Practice: Rounding a number to nearest 10, 100, 1000 and beyond
• 75: Exam Practice: Rounding a number to a given number of decimal places

Tutorial Videos

Approximations to Calculations – Corbettmaths

Corbett Maths Approximations to Calculations

Online Platforms (with Videos & Exercises)

Activities & Resources

• Pixi Maths
  • Rounding & Estimating ppt (Slide 18 Onwards)
• Andy Lutwyche
  • Games Of Cones – Season 2 & Estimation
  • Crack The Safe, Estimation and Bounds
  • Estimation Warehouse
  • Estimation Challenge
• Don Steward
  • Estimating Sums✦
  • Elephants Per Whale
  • Estimating II
  • Estimating Things (I)
• The Chalkface
  • Wheat Grains: PDF
• Transum
  • Rough Answers
  • Wrong But Close
• Go Teach Maths
  • Approximating Calculations
• CP3 Maths (cparkinson3)
  • Estimation by rounding lesson✦
• Dan Walker
  • Estimation collect a joke✦
• Ticktock Maths
  • Estimation lesson (slides)
• NCETM
  • NCETM Key Idea: Estimating numerical calculations (PowerPoint)

Worksheets

• Dr Austin Maths
  • Estimation and Approximation Practice Strips (Word | PDF | Answers)
  • Estimation Practice Grid (Word | PDF✦ | Answers✦)
  • Estimation Odd One Out (Word | PDF | Answers)
• Corbettmaths
  • Estimation Practice Questions (Q1-19) & Solutions
  • Estimation Worksheet & Solutions
• Pixi Maths
  • Estimating RAG
• CIMT MEP (online self-checking)
  • Estimating
  • Estimation
• Maths Genie
  • Estimating: Booklet · Worksheet · Solutions · Lesson · Topic page
• Physics & Maths Tutor
  • Estimation and Approximation: Notes · Worksheet · Solutions
• Access Maths
  • Estimating Fluency & Reasoning Sheet
• MME
  • Estimating (exam style): Questions | Answers  •  Estimating (drill): Questions | Answers
• OCR
  • Approximation and Estimation Check In✦
• Jo Morgan
  • Estimation worksheet✦ (by Jo Morgan)
• Mr Morley Maths
  • Estimation and Approximation: Notes jotter/worksheet · How-to sheet · Exam questions · Mark scheme · Rehearsal strip · Answers
• Pret Homework (@JamesW_72)
  • Estimation and Rounding (@JamesW_72, docx)

Dr Frost Video

Key Skill – Estimate the answer of a simple calculation.

K224: Estimate the Answer of a Simple Calculation.

Key Skill – Estimate the result of a division.

K225: Estimate the Result of a Division.

Dr Frost Slides & Activities

Dr Frost Slides (5)

Extra Questions

• Dr Frost Questions

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 188a: Estimate the answer of a simple calculation using rounding to significant figures.
• 188b: Estimate the result of a division by a decimal using rounding to significant figures.
• 188c: Estimate a value from a problem in context with a single arithmetic operation.
• 188f: Determine whether an estimated value is an underestimate or overestimate.
• 51c: Check arithmetic calculations by estimation.
• 188: Exam Practice: Estimating the result of a calculation by first rounding each number
• 51: Exam Practice: Checking calculations

Tutorial Videos

How to Estimate the Square Root of Non-Square Numbers (2026/27 exams)

How to Estimate the Square Root of Non-Square Numbers by Cognito

Estimation

Estimation by Maths Genie

How to approximate square roots | Numbers and operations | 8th grade | Khan Academy

How to approximate square roots by Khan Academy

Online Platforms (with Videos & Exercises)

Activities & Resources

• Don Steward
  • Approximate Square Roots
• Transum
  • Estimate Powers and Roots
• Goal Free Problems
  • Higher Number set Q14 (original questions)
• Go Teach Maths
  • Estimating Roots
• BossMaths
  • N14a Estimating Answers & Checking Calculations✦
  • Estimating powers and roots✦
• Mr Thompson Maths
  • Estimating square roots✦

Worksheets

• Corbettmaths
  • Estimation Practice Questions (Q20 Onwards) & Solutions
  • Estimation Worksheet (Q5d Onwards), & Solutions
• MME
  • Estimating 2 (drill): Questions | Answers
• Pret Homework (@AdamGoodridge18)
  • Estimating with Pi, Fractions and Surds (@AdamGoodridge18, docx)
• AQA (All About Maths)
  • Teaching Guide: Solving Estimation Problems (AQA Core Maths, Fermi-style)

Dr Frost Video

Dr Frost Slides & Activities

Dr Frost Slides (7-12)

Exam Practice

• Standard Test

Extra Questions

• Dr Frost Questions

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 188d: Estimate a value from a problem in context with multiple arithmetic operations.
• 188e: Determine a better estimate to a calculation using rounding not to significant figures.
• 189a: Determine the rounding error (round-off error) when the result of a calculation is rounded. (not yet active)
• 189b: Determine the effect of early rounding on subsequent calculation with that value. (not yet active)
• 188: Exam Practice: Estimating the result of a calculation by first rounding each number
• 189: Exam Practice: Rounding errors (round-off errors) (not yet active)

Tutorial Videos

Rounding 1 — Decimal Places

CGP Books

Rounding to 1 and 2 Decimal Places – Corbettmaths

Corbett Maths Rounding to 1 & 2 Decimal Places

Rounding to decimal places and significant figures

Courtesy of Maths Genie (Up to 9:07)

Online Platforms (with Videos & Exercises)

• Maths Made Easy

Activities & Resources

• WW ppt adapted largely from newmrsc resource on TES. Includes Rounding to DP, SF and basic estimation
• WW interactive number line on Autograph – previous install required (TES Account Required)
• Go Teach Maths treasure trove of activities & ppts
• Interactive-maths.com Rounding Bingo
• Transum
  • 1dp interactive worksheet activity
  • 2dp interactive worksheet activity
• Maths 4 Everyone
  • Rounding to One Decimal Place Loop: Set 1 · Set 2
• mathspad codebreaker✦
• variationtheory lesson
• Rounding Pixel Puzzle 2 – MissBrookesMaths 
• Andy Lutwyche
  • Codebreakers
  • Defuse The Bomb
• GeoGebra
  • Rounding decimals Geogebra Visualisation✦
• Ticktock Maths
  • Rounding to Decimal Places lesson (slides)

Worksheets

• Dr Austin Maths
  • To Practice Strips (Word | PDF | Answers)
  • To Decode the Joke (Word | PDF | Answers)
  • To Pixel Picture (Word | PDF | Answers)
• Corbettmaths
  • Round to Decimal Places Practice Questions & Solutions
  • Round to Decimal Places Worksheet & Solutions
• jhofmannmaths Worksheet Table (TES Account Required)
• Pixi Maths
  • Rounding Decimal Places RAG
• Worksheetmath Worksheet Generator
• Self Marking Sheets by Phil Rhodes
  • Rounding to whole number, 1 and 2 dp. Excel File
• CIMT MEP (online self-checking)
  • Rounding
• Access Maths
  • Rounding to Decimal Places Fluency & Reasoning Sheet
• Mr Morley Maths
  • Rounding: Notes jotter/worksheet · How-to sheet · Exam questions · Mark scheme · Rehearsal strip · Answers

Dr Frost Videos

Rounding to Decimal Places

Whole Topic Video

Key Skill – Round a Number to a Given Number of Decimal Places.

K66: Round a Number to a Given Number of Decimal Places.

Dr Frost Slides

Dr Frost Slides (3-6)

Exam Practice

• Exam Practice

Extra Questions

• Dr Frost Questions: Dp only · Dp & estimation

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 75b: Round a number to 1 decimal place.
• 75c: Round a number to 2 or more decimal places.
• 75: Exam Practice: Rounding a number to a given number of decimal places

Further Practice

• Practise Questions

Tutorial Videos

Rounding to Significant Figures – Corbettmaths

Corbett Maths Rounding to Significant Figures

Online Platforms (with Videos & Exercises)

Activities & Resources

• Andy Lutwyche
  • Spider(TES Account Required)
• Paddy Moore Y10 Rounding ppt
• Pixi Maths
  • Rounding & Estimating ppt (Slides 1- 17)
  • Rounding Starter
• Transum
  • Rounding SF
• Mr Draper Maths Zeros Are Nothing? Zeros Are Everything!✦
  • Rounding and Place Value Digit Problems
  • Rounding and Place Value Venn Diagrams
  • Open Middle Style Digit Venn Diagram Problems
• Go Teach Maths
  • Rounding Using Significant Figures
  • Rounding Using Decimal Places & Significant Figures
• Ashton Coward
  • Significant Figures✦
• Ticktock Maths
  • Rounding to Significant Figures lesson (slides)
• NCETM
  • NCETM Key Idea: Rounding integers to significant figures (PowerPoint)

Worksheets

• Dr Austin Maths
  • To Practice Strips (Word | PDF | Answers)
  • To Pixel Picture (Word | PDF | Answers)
  • To Practice Grid (Word | PDF | Answers)
  • Crack the Code (Word | PDF | Answers)
  • To One Significant Figure Practice Grid (Word | PDF | Answers)
  • Suitable Degree of Accuracy Practice Strips (Word | PDF | Answers)
• Corbettmaths
  • Rounding to Significant Figures Practice Questions & Solutions
  • Rounding to Significant Figures Worksheet & Solutions
• Pixi Maths
  • Rounding Significant Figures RAG
• Self Marking Sheets by Phil Rhodes
  • Rounding with Significant Figures Excel File
• CIMT MEP (online self-checking)
  • Rounding
• Mathshelper (Jon Stone)

Dr Frost Video

Key Skill – Round a number to a given number of significant figures.

K223: Round a Number to a Given Number of Significant Figures.

Dr Frost Slides & Activities

• Dr Frost Slides (13)

Exam Practice

• Advanced Test

Extra Questions

• Dr Frost Questions

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 187a: Round a large number to 1 significant figure.
• 187b: Round a small number to 1 significant figure.
• 187c: Round a large number to 2 or more significant figures.
• 187d: Round a small number to 2 or more significant figures.
• 187: Exam Practice: Rounding a number to a given number of significant figures

Further Practice

• Practise Questions

Tutorial Videos

Truncation – GCSE

Truncation – GCSE by Dr Frost Maths

Truncation with Error Intervals | Number | Grade 5 Crossover Playlist | GCSE Maths Tutor

Truncation with Error Intervals by The GCSE Maths Tutor

Online Platforms (with Videos & Exercises)

Activities & Resources

• Pixi Maths
  • Truncation and Error Intervals ppt
• Andy Lutwyche
  • Codebreaker
  • Defuse The Bomb – (non-traditional amounts)
• Go Teach Maths
  • Error Intervals With Truncation
• BossMaths
  • N15a Rounding & Truncating✦
• Jemma Sherwood
  • Truncation✦

Worksheets

• Pixi Maths
  • Truncation and Error Intervals RAG
• Dr Austin Maths
  • Truncating Numbers Practice Strips (Word | PDF | Answers)
• Mr Morley Maths
  • Truncation: Notes jotter/worksheet · Exam questions · Mark scheme

Dr Frost Video

Key Skill – Truncate a number to a given number of decimal places.

K457: Truncate a Number to a Given Number of Decimal Places or to a Whole Number.

Dr Frost Slides & Activities

• Dr Frost Slides (13)

Exam Practice

• Advanced Test

Extra Questions

• Dr Frost Questions

Key Skills

Note all numbers are subject to change and will be updated once all key skills have been finished by Dr Frost

• 383a: Truncate a number to a given number of decimal places or to a whole number.
• 383: Exam Practice: Truncating a number to a given number of decimal places

Further Practice

• Practise Questions