Day 1
Most children create their own questions by selecting pairs of numbers to add. Some will complete a challenge involving missing numbers.

Day 2
Children are set different challenges to add 11, 12, 13, 21, 22, 23, 31, 32 or 33 to other 2-digit numbers; answers ≤110.

Day 3
Children calculate which of a set of given numbers is required to make a set of given calculations correct.