We discussed what square numbers are in What's So Special? Remember these are numbers that are multiplied by themselves.
We can square any number.
$12^2=12\times12$122=12×12 $=$= $144$144
$100^2=100\times100$1002=100×100 $=$= $10000$10000
Cube numbers are numbers that are multiplied by themselves two more times. (that number three times in total)
$2^3=2\times2\times2$23=2×2×2 $=$= $8$8
$5^3=5\times5\times5$53=5×5×5 $=$= $125$125
Evaluate $8^2+7$82+7
Evaluate $12^2-9^2$122−92
Evaluate $5^3+3^2$53+32