100 pages of addition practice questions – single digit, double digit, triple, quadruple… all the way up to tens of millions. Level 1 – simple addition of single digit numbers. Levels 2&3 – double digit numbers. The number of digits continues to build across 11 levels until children are practising with 8 digit numbers. This fantastic set of practice pages gives children plenty of opportunity to practise their addition across 11 levels of difficulty. Answer booklet included.