A good problem solving activity for children from 8yrs-12yrs. The activity is to make various totals (some decimals) using a given selection of decimal number cards. The worksheet states whether the children are to use 2, 3 or even 4 decimal numbers to reach their total.
The extension activity challenges the children to come up with as many combinations of decimals to reach 1.
Proved very popular with my year 6 class.