# Balancing with mixed operations

Lesson

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:

1. $19-\editable{}=8+6$19=8+6

##### Question 2

Complete the number sentence:

1. $15+39=9\times\editable{}$15+39=9×

##### Question 3

Complete the number sentence:

1. $17-7=100\div\editable{}$177=100÷​

### Outcomes

#### NA2-6

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