# Mental arithmetic for Years 4, 5 and 6

Tricky question for you today! How would you do 15 x 8 in your head? Think carefully of the process you went through to find the answer. One way is to double 15 to make 30 and then multiply 30 by 4 to make 120. Or I could multiply 8 by 10 to get 80 […]

# Consecutive numbers in a 3 by 3 square

This is really a mini version of investigating a 100 number square, but many children will feel more confident when faced with a less daunting starting point. Choose any nine consecutive numbers and place them in order (from left to right) in a 3 x 3 square. Add the diagonals. What do you notice? A […]

This is a great little investigation which has plenty of extension possibilities for those with enquiring minds. Dom the Dragon is thinking of a number and we are given two rules about the number: 1. The digits add up to 5. 2. None of the digits is a zero. The challenge is to find all […]

# Year 4 maths: Tenths of rectangles

Two of the best ways for children to understand decimals are: a. by using money b. by looking at shapes which are divided into tenths. This set of pages looks in more detail at shapes. A series of rectangles is shown, each divided into ten equal parts: each part being one tenth. This is a […]

# Year 4 Subtraction Games

To add to our addition games, we have nw released a set of subtraction games for you to enjoy. There are 24 great new mental maths games on subtraction for children aged between 8 and 9 (that’s year 4 in the UK).  To make it a little easier to find the one you would like […]