$12-4=8$12−4=8. Use this to find:

a

$22-4=\editable{}$22−4=

b

$32-4=\editable{}$32−4=

c

$42-4=\editable{}$42−4=

d

$72-4=\editable{}$72−4=

Easy

Less than a minute

We know that $9-2=7$9−2=7.

Use this to find:

$113+14=127$113+14=127

Use this to find:

$116+20=136$116+20=136

Use this to find:

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selects and applies appropriate strategies for addition and subtraction with counting numbers of any size

selects and applies appropriate strategies for multiplication and division, and applies the order of operations to calculations involving more than one operation

analyses and creates geometric and number patterns, constructs and completes number sentences, and locates points on the Cartesian plane