Number bonds

KS1, practice number bonds by clicking here

Number bonds means knowing all of the pairs of numbers that add up to make a number, for example:

Number bonds to 10:

0 + 10 = 10

1 + 9   = 10

2 + 8   = 10

3 + 7   = 10

4 + 6   = 10

5 + 5   = 10

Can you see the pattern?

Did you know...it doesn't matter what order you put the numbers in an add sum, the answer will always be the same...     3 + 7 = 10   or  7  +  3 = 10    .  A great tip!!!

If you need a challenge, try working out number bonds to 20!