In this worksheet you have to work out different possibilities to make the given sum correct by filling in the gaps with suitable number pairs.

__Example__

Find 10 different ways of making this sum correct.

370 + ___ + ___ = 500

__Answer__

We need to find pairs of numbers which add to 500 - 370 = 130

For example 60 + 70, which is shown in the first answer below. There are many other possibilities, some of which are shown below.

- 370 + 60 + 70 = 500
- 370 + 70 + 60 = 500
- 370 + 41 + 89 = 500
- 370 + 30 + 100 = 500
- 370 + 93 + 37 = 500
- 370 + 82 + 48 = 500
- 370 + 15 + 115 = 500
- 370 + 21 + 109 = 500
- 370 + 44 + 86 = 500
- 370 + 74 + 56 = 500