Module 3
What addition expression is equivalent to
65 - (-28)
65 + 28
-3.2 - (1.4) =
-4.6
What is -2 5/11 as a decimal?
-2.45 (45 is repeating)
A rectangle activity room is 35 feet long by 23 feet wide. Write an equation to best estimate the area of the room.
Length x Width = Area
About 40 x 20 = 80 feet
Which property is shown:
-5 + -3 = -3 + -5
Commutative Property
-400 - (-5) =
-395
14 1/2 - 12 3/4 =
Write as a fraction
1 3/4
Rewrite as a multiplication sentence:
(-4) + (-4) + (-4) + (-4) + (-4) + (-4)
6 x (-4) or (-4) x 6
(8.4 + 6 x 10) - 7
61.4
Which property is shown:
(4 + 7) + 3 = 4 + (7 + 3)
Associative
A Scuba diver is at an elevation of 12 feet on the boat. He then dives into the water at 26 feet below sea level. What was the total change in elevation?
12 + 26 = 38 but -38 since he dived.
31.78 - (-71.24) =
Write as a decimal
103.02
Will this result in positive or negative:
3 2/3 x (-11) x (-2.35) x (9 1/2)
Positive
A school bought 500 stickers for students for spirit week. The school passed out 421 stickers before buying 300 more. Then the school passed out another 274 stickers. How many stickers does the school have left?
105
Which property is shown:
3(2 + 6) = 3(2) + 3(6)
Distributive
Todays high temperature is 67 degrees and the low is -2 degrees. What is the DIFFERENCE in tempertures?
67 - (-2) = 69 degrees
-3 2/5 + -4.5 =
Write as a decimal
-7.9
A crane lowers a wrecking ball at a rate of 1 1/2 feet per second. What is the change in height of the wrecking ball after 30 seconds?
-45 feet
Jeremiah drove 30 miles to work for 14 days. Then had to drive 42 miles to work for 7 days. What was to total distance he drove to work those 3 weeks?
714 miles
Which property is shown:
[(-5)(4)](-2) = [(-5)(-2)](4)
Commutative Property
A roller coaster is 155 feet in the air before rolling down 75 feet on the tracks. Then is climbs 72.5 feet up. What is the current height of the roller coaster?
152.5 feet in the air
5.8 + 3 3/5 =
Write as a decimal
9.4
-893/12 =
Write as a decimal
-74.16 (6 is repeating)
Aurora sells homemade cupcakes for $3.25 each. It costs her $3.75 for the ingredients for 3 cupcakes. If she sold 15 cupcakes last week, how much did she make?
$30
Which property is shown:
(7.1)[(4.1)(3.25)] = [(7.1)(4.1)](3.25)
Associative Property