Number (mult/div)
Hong Kong
Stage 1
Find unknowns in multiplication and division problems (5,10)
Lesson
To solve equations with missing values, we can use multiplication or division. Sometimes we know our total, while other times we may know how many groups or items we have only. This video helps you work out whether to use multiplication or division.
Examples
QUESTION 1
Fill in the box with the missing number.
$3\times9=\editable{}$3×9=
QUESTION 2
Fill in the box with the missing number.
$3\times\editable{}=27$3×=27
QUESTION 3
Fill in the box with the missing number.
If you get $10$10 groups of $\editable{}$, then altogether you have $60$60.