Place-value chart

Break a number down by classes and places, with decimals from CM1.

Number

thousands		ones
t	o	h	t	o

Enter a number to see it decomposed.

Learning objectives

Grade 1
- Break a two-digit number into tens and ones.
- See how a digit's place changes its value.
Grade 2
- Extend to hundreds: break down numbers up to 999.
- Read the chart to rewrite a number as a sum (300 + 40 + 7).
Grade 3
- Work with ten-thousands (up to 99 999).
- Spot the classes: ones and thousands.
Grade 4
- Reach the millions and introduce first decimals (tenths, hundredths).
- Tell the classes apart in long numbers and locate the decimal point.
Grade 5
- Master decimal places down to thousandths.
- Decompose a decimal as a sum: 3 × 1 + 2 × 0.1 + 5 × 0.01.

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