Adding & subtracting integers

A football team gained 15 yards on one play and then lost 27 yards on the next. Which equation shows the change?

• -15 + (-27) = -42

• 15 + (-27) = -12

• 15 + 27 = 42

• -15 + 27 = 12

Bob lost 5 bonus points on page one of his math test and he gained 12 points bonus on page two of his math test. Which equation best describes Bob's progress on his math test?

• 5 + 12 = 17

• -5 + 12 = 7

• -5 + (-12) = -17

• 5 + (-12) = -7

Overnight, the temperature in Toronto, Ontario dropped from 3°C to -4°C. How many degrees did the temperature change?

• 3 - (-4) = 7 °C

• 3 - 4 = -1°C

• -3 - (-4) = 1°C

• -3 - 4 = -7°C

A soccer team is having a car wash. The team spent $25 on supplies. They earned $225 during the car wash. Which equation shows the soccer team's profit?

• -25 + 225 = 200

• -25 + (-225) = -250

• 25 + 225 = 250

• 25 + (-225) = -220

The temperature in Fairbanks, Alaska rose from 9°F to -1°F. How many degrees did the temperature change?

• 9 - (-1) = 10°F

• 9 - 1 = 8°F

• -9 - (-1) = -8°F

• -9 - 1 = -10°F

-2 + 4 

• -2
• 2
• 0
• -4

-9 + (-5)

• -14
• 14
• -4

10 + (-4) = ?

• -6
• 6
• 14
• -14

-7 - 2

• -9
• 9
• 5
• -5

15 - 21

• 6
• 26
• -6
• -26