Multiply and divide whole numbers and those involving decimals by 10, 100 and 1,000

What this means, in plain words

A decimal writes parts of a whole using the places after the point: tenths, then hundredths, then thousandths.

Multiplication is repeated addition of equal groups. Division shares a total into equal groups, or works out how many groups fit.

Number work here is about how our number system is built, and about knowing what a number is worth rather than just how it is spelled.