1. What is 20 decreased by -20 ?
A. -40
B. 0
C. 20
D. 40

2. What should be added to -54 to get -30?
A. -84
B. -24
C. 24
D. 84

3. Give the correct answer if we will Simplify this: (-78 + -22) + (-75 + 25) *
A. -200
B. -150
C. -125
D. 15

4. Subtract -20 from the difference of -175 and -15.
A. -140
B. -120
C. 120
D. 140

5. What is 220 decreased by the sum of -70 and 20?
A. -310
B. -270
C. 270
D. 310​