Recognise and write decimal equivalents of any number of tenths or hundredths

What this means, in plain words

Two fractions are equivalent when they are worth the same amount even though the numbers look different, such as one half and two quarters.

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

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.