Adding Rational Numbers
-4 + 3
-1
7-12
-5
-5(7)
-35
120 / (-2)
-60
Susan purchased her friend’s 10-speed bike for $144. She has agreed to pay her friend in equal payments over the course of two months. If Susan pays a portion each week, how will her checking account be affected each week?
-18 each week
-10+ (-17)
-27
-23 - (-48)
25
-8(-12)
96
-15 / (-5)
3
Last night it was 57°F, this morning when I woke up it was -10°F. What was the change in temperature?
67 degrees
16 + (-20)
-4
-5 - 18
-23
9(-11)
-99
-8 / 2
-4
Mr. Wayne has a 3-year contract for his cell phone service. He pays $124.65 each month to cover everyone in his family. How much will he pay over the 3 year period?
$4,487.40
(-17) + 45 +17
45
-2 - 5 - (-20)
13
2(-5)(-4)(-3)
-120
-16.9 / -13
1.3
A skydiver took 10 seconds to drop 500 feet. How many feet did he lose per second?
(-1/3) + (-5/6)
-7/6
-1.5 - (-32.8)
31.3
(-4/5)(-20/21)
16/21
(-4/5) / (1/4)
-3 and 1/5
Jesse needs 8.25 feet of chain to complete an outdoor project. He has two small pieces measuring 2.125 feet and 3.75 feet. How many feet of chain does Jesse need to purchase?
2.375 feet