Name: 

Use your integer addition strategies to answer each of the following questions.

What number would make this addition sentence true?

(+90) + (-30) +  = -30

(-45) + (+45) + (-20) + =  -15

Calculate each sum.

(-50)  + (-13) + (+24)

(-35) + (+47) + (-33)

(+17) + (-45) + (-23)

(-54) + (+23) + (-12)

(+50) + (-45) + (+17)

(-33) + (+21) + (-32)

(-34) + (+46) + (-21)

(-67) + (+89) + (-13)