Number (4 ops and mixed)
Hong Kong
Stage 1
Balancing with mixed operations
Lesson
In Balancing Numbers up to 50 we saw that number sentences are balanced if both sides of the number sentence have the same value.
Example: $20-4=13+3$20−4=13+3
In this number sentence both the left and right sides of the sentence are equal to $16$16. So we say the number sentence is balanced.
Look at this video to see how to solve maths problems involving balancing number sentences.
Worked Examples
Question 1
Complete the number sentence:
$48-\editable{}=19+16$48−=19+16
Question 2
Complete the number sentence:
$15+39=9\times\editable{}$15+39=9×
Question 3
Complete the number sentence:
$6\times\editable{}=24\div2$6×=24÷2