Number (add/sub)

Hong Kong

Stage 2

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

Approx 2 minutes

Consider the difference $105-15$105−15.

Consider $11\left(7-3\right)$11(7−3).

Given $2\left(5-3\right)+5\left(5-3\right)$2(5−3)+5(5−3):

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