Unit 3 · Place value and rounding

Video lessons

8 lessons from established maths channels, all taught by native English speakers and all matched to a specific section of Unit 1. Every video ID was verified, so none of these links are broken.

CorbettmathsMath Antics Math with Mr. JKhan Academy Mathsaurus
This is the one page that needs an internet connection. The players below stream from YouTube. If you are working offline, use the printable PDFs on the downloads page instead, and come back to the videos later.

3.1 Multiplying and dividing by powers of 104 videos

Multiplying by 10, 100, 1000

British Corbettmaths

The digits-move-left idea, taught exactly the way the Cambridge book presents it.

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Dividing by 10, 100 and 1000

British Corbettmaths

The companion video: this time the digits move right.

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Multiplying and Dividing by Powers of 10

American Math with Mr. J

Uses index notation (10³, 10⁴) throughout, which is how Stage 7 writes it.

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Multiplying and Dividing by 10, 100, 1000 — worked answers

British stretchCorbettmaths

Full worked solutions to a practice set — useful once you have tried some yourself.

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3.2 Rounding4 videos

Math Antics - Rounding

American mathantics

Builds the rounding rule from the number line, so it makes sense rather than being a recipe.

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How to Round Decimals

American Math with Mr. J

Rounding to a given number of decimal places, step by step.

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Rounding to 1 Decimal Place

British MatholiaChannel

A short, focused treatment of the commonest case.

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Rounding Decimals to Significant Figures

British stretchMaths Tutor Tom

Significant figures, which Stage 7 meets alongside decimal places.

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All links in one tablecopy-friendly

SectionVideoChannelAccentLevel
3.1Multiplying by 10, 100, 1000CorbettmathsBritishcore
3.1Dividing by 10, 100 and 1000CorbettmathsBritishcore
3.1Multiplying and Dividing by Powers of 10Math with Mr. JAmericancore
3.1Multiplying and Dividing by 10, 100, 1000 — worked answersCorbettmathsBritishstretch
3.2Math Antics - RoundingmathanticsAmericancore
3.2How to Round DecimalsMath with Mr. JAmericancore
3.2Rounding to 1 Decimal PlaceMatholiaChannelBritishcore
3.2Rounding Decimals to Significant FiguresMaths Tutor TomBritishstretch