Adding/Subtracting Integers
solve:
45 - 120 =
-75
solve:
125 / 5
25
combine:
10w - 3 + w
11w - 3
expand:
16(2h - 5)
32h - 80
An airplane is flying at 12,500 feet. It descends 3,450 feet due to turbulence, then climbs 1,275 feet. What is the plane’s altitude now?
12,500 - 3,450 + 1,275 = 10,325 ft
solve:
-8 + 17
9
solve:
(-8)(13)
-104
combine:
-5y - (-10) + 7y
2y + 10 or 2y - ( - 10)
expand:
14(-3a - 14)
-42a - 196
Your bank account is at -$116. You deposit $835 from a paycheck, then spend $489 on clothes. What is your balance now?
-116 + 835 - 489 = $230
solve:
-35 - 28
-63
solve:
(-14)(-7)
98
combine:
9b - 4 + 2a + b
10b + 2a - 4
expand:
6(d + 13) - 8
6d - 70
A student owes $38 each month in gaming payments for 15 months. What integer represents the total amount owed?
-38 x 15 = $-570
solve:
(-27) - (-10)
-17
solve:
-84 / 7
-12
combine:
17k - 17 - 17 + 17j + 3k
17j + 20k - 34
expand:
5(3z + 9) - 3z(5 + 5)
-15z + 45
A submarine is at -140 feet. It descends another 65 feet, then rises 92 feet. After that, it drops 38 feet. What is the submarine’s final depth?
-140 - 65 + 92 - 38 = -151 ft
solve:
20-2+(-4)+10-(-6)
30
solve:
(-16)(-9)
144
combine:
26r - 75 - 3p + 100 - 13r
13r - 3p + 25
expand:
25 + 3 - t(3 + 5) + 10t
2t + 28
You owe the bank $85. You deposit $120, spend $47 on groceries, then spend another $39 on sneakers. What is your final balance?
-85 + 120 - 47 - 39 = -51