This is the second in our mini series on practising mental addition. This page looks at pairs of numbers that make 60. There are 8 snappy questions followed by a task to find all the pairs of odd numbers that make 60. Not too long as there are only 15 pairs of odd numbers!
If children can work out these 2-digit additions ‘in their head’ it gives them a great deal of confidence when working with larger numbers, so the practice is well worthwhile.