## Tags » Subtraction

#### How to help your child add and subtract mentally

Many children really struggle with adding and subtracting mentally in their heads and often rely on using their fingers to count. I’ve seen this with children all the way up to Year 6. 854 more words

#### Combinatorial Puzzle

This is a continuation of previous post:

48 more wordsHow many distinct numbers can be formed by using four 2s and the four arithmetic operations .