When we need to balance a number problem, it helps to imagine a seesaw. We want each side to have the same value, so the seesaw doesn't tip over. Let's have a look at how we can do this.

Worked Examples

Question 1

Complete the number sentence:

$19-\editable{}=8+6$19−=8+6

Question 2

Complete the number sentence:

$15+39=9\times\editable{}$15+39=9×

Question 3

Complete the number sentence:

$17-7=100\div\editable{}$17−7=100÷

Outcomes

NA2-6

Communicate and interpret simple additive strategies, using words, diagrams (pictures), and symbols.