Estimating
Adding Decimals
Subtracting Decimals
Using Strategies and Reasoning
100
8.9 + 31.74 = _________
40.64
100
17.02 - 5.63 = ___________
11.39
200
92.6 + 650.2 + 8.47 = _______
751.27
200
A pitcher holds 2.6 liters of juice. Jonathan drinks 0.75 liter of juice from the pitcher. How many liters of juice are left in the pitcher?
1.85 liters
300
Maria spent 10.75 hours in July and 9.5 hours in August building a treehouse. What is the total number of hours she spent building the treehouse?
20.25 hours
300
Two rocks have a mass of 75.2 grams. One rock has a mass of 43.9 grams. What is the mass of the second rock, in grams?
31.3 grams
400
Select all the equations that are a reasonable estimate of 4.82- 1.17
a) 4.75-1.5=3.25 d) 4.75-1.25=3.5
b) 5-1.25=3.75 e) 5-1=4
c) 5-2=3
B, D, E
400
Shawna knit 31.25 inches of a scarf last week ad 27.8 inches of the same scarf this week. How many inches of the scarf did Shawna knit in two weeks?
59.05 inches
400
Javier rode his bike 4.8 miles from his school to the library. Then he rode home. Javier rode his bike a total of 6.3 miles.
Write an equation that models how to find the distance between the library and his home.
6.3 - 4.8= 1.5
400
The art club spent $57.29 on new art materials. They paid $32.45 for paint, and $8.36 for paintbrushes. If the rest of the money was spent on paper, how much did the art club pay for paper?
$16.48
500
Write an equation that shows a reasonable estimate of the total number of kilometers from Town R to Town T.
20 + 30 = 50
500
How many kilometers is it from Town R to Town T?
45.38 kilometers
500
How many kilometers longer is the distance from Town S to Town T than from Town R to Town S?
12.78 kilometers
500
Nicole needs to buy the science supplies listed in the table. Her dad gives her $20 to spend on the supplies. Does Nicole have enough money to buy all the supplies she needs? Explain.
No, because the total cost of the science supplies is $20.16