Lesson 64: Adding Positive and Negative Numbers

$$\left(-28\right)+\left(+75\right)$$  Simplify.

(a)  

Simplify.

$$\left(-9\right)+\left(-12\right)+\left(+20\right)$$  

(a)  

Simplify.

$$\left(-18\right)+\left(-12\right)+\left(-10\right)$$  

(a)  

Simplify.

$$\left(-7\right)+\left(+7\right)+\left(-17\right)$$  

(a)  

Jeff has $25 in his checking account. He goes to the bank and withdraws the $25. How much money does he have in his account after withdrawing the $25?

Which of the following have a net sum of 0? Select 3 answers.

Which number sentences are additive inverses? Select 2 answers.

Which number sentences will have a positive answer? Select 3 answers.

If you are going to add -14+(-23), what math operation do you really use?

If you are going to add 18+(-25) what math operation do you really use?