Adding Integers
−7+12
5
8−13
-5
Yesterday, the temperature was -3°C. Today, it rose by 7°C. What is today’s temperature?
4°C
0.3, 0.9, 0.1
0.1, 0.3, 0.9
2/3 x 4/5
8/15
15+(−9)
6
−6−4
-10
Liam had $15 in his bank account. He withdrew $20. How much money does he have now?
−5 → Liam is $5 in debt
0.75, 0.25, 0.5
0.25, 0.5, 0.75
3/4 ÷ 2/5
15/8
−4+(−8)
-12
15−(−7)
22
A submarine was at -30 meters below sea level. It ascended 12 meters. What is its new depth?
−30+12=−18 meters
0.62, 0.26, 0.82
0.26, 0.62, 0.82
7/8 x 2/3
14/24 or 7/12
20+(−25)
-5
−9−(−3)
-6
A team lost 8 yards on one play and then gained 15 yards on the next play. What is their net gain or loss?
−8+15 = 7 yards gain
0.45, 0.54, 0.4
0.4, 0.45, 0.54
5/6 ÷ 1/3
15/6 or 5/2 or 2 1/2
−13+18
5
12−20
-8
A hiker starts at 200 meters above sea level, climbs 50 meters, then descends 75 meters. What is the hiker’s final elevation?
200+50−75 = 175 meters
0.08, 0.8, 0.18
0.08, 0.18, 0.8
9/10 ÷ 3/5
45/30 or 3/2 or 1 1/2