Home > AC > Chapter 1 > Lesson 1.2.1 > Problem1-49

1-49.

Try these problems without a calculator first. Then use a calculator to check your answer. Homework Help ✎

Remember: When you subtract a negative, it changes to adding a positive. When you multiply two negatives, they become positive.

1. $−16+7$

$−9$

1. $10−(−24)$

$34$

1. $(3)(−9)$

1. $−9+(−11)$

$−20$

1. $−49−36$

$−85$

1. $−56\div(−7)$

1. $15\div(−3)$

1. $−7\div7$

1. $(−6)·9$

$−54$

1. $(−5)(−5)$

$25$

1. $(−6)·(43)$

1. $27−(−3)−4$

$26$