Number (add/sub)
Hong Kong
Stage 2
Rewriting subtraction problems
Interactive practice questions
Consider the difference $88-20$88−20 :
a
Find the highest common factor of $88$88 and $20$20.
b
Complete the gaps such that $88-20$88−20 is rewritten as an equivalent multiplication using the distributive property.
|
$88-20$88−20 |
$=$= |
$4\times\left(\editable{}-5\right)$4×(−5) |
| $=$= |
$4\times\editable{}$4× |
Easy
2min
Consider the difference $105-15$105−15.
Easy
< 1min
Consider $11\left(7-3\right)$11(7−3).
Easy
< 1min
Given $2\left(5-3\right)+5\left(5-3\right)$2(5−3)+5(5−3):
Easy
1min
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