$12-4=8$12−4=8. Use this to find:
$22-4=\editable{}$22−4=
$32-4=\editable{}$32−4=
$42-4=\editable{}$42−4=
$72-4=\editable{}$72−4=
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:
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