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:
$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÷