How it works
Turn it round, group it or split it: the dots stay the same.
4 × 4 × 2 is the same as 4 × 8.
You can split 5 × 13 into 5 × 10 and 5 × 3.
Worked examples
Group the numbers
- 4 × 4 × 2 = 4 × ?
- 4 × 2 = 8.
- So 4 × 4 × 2 is 4 × 8.
- So the answer is 8.
Join two products
- 9 × 5 + 9 × 2 = 9 × ?
- 9 × 5 + 9 × 2 is 9 groups of 5 and 9 groups of 2.
- That is 9 groups of 7.
- So the answer is 7.
Split a number
- 5 × 13 = 5 × 10 + 5 × ?
- 13 = 10 + 3.
- So 5 × 13 = 5 × 10 + 5 × 3.
- So the answer is 3.
A taste of the worksheet
These are the first problems of set A. The printable sheet has many more, with an answer key.
- 5 × 6 = __ × 5
- 8 × 2 = __ × 8
- 6 × 5 = __ × 6
- 9 × 8 = 8 × __
- 6 × 3 = __ × 6
Words to know
- split
- To break a number into parts.
- group
- To put numbers together in a different way.