Add.

Find the following sums.

$103+72$

Find the following sums.

$351+614$

Find the following sums.

$5421+378$

Add.

Add.

Rewrite the expression using the stated property, then find the sum.

$4+7$ | commutative property

Rewrite the expression using the stated property, then find the sum.

$(11+3)+9$ | associative property

Rewrite the expression using the stated property, then find the sum.

$13+0$ | addition property of 0