Drawings
What does a stick represent in decimal drawings?
A tenth
5.2 + 11.4
16.6
11.31
Ben spent 23.05 hours on an art project last month. This month, he spent 14.9 hours on the project. How many hours did he work on the art project?
37.95 hours
What is an equation that is a reasonable estimate for 34.7 + 21.2?
A) 40 + 25 = 65
B) 30 + 20 = 50
C) 35 + 20 = 55
C) 35 + 20 = 55
What drawing would represent 3.96?
See Ms. Carlson's drawing.
8.9 + 31.74
40.64
4.82 - 1.17
3.65
Nicole used 16.3 yards of blue yarn and 7.92 yards of yellow yarn for a blanket. How many yards of yarn did she use?
24.22 yards
What equation is a reasonable estimate of 26.2 + 49.09?
A) 20 + 45 = 65
B) 50 - 25 = 25
C) 25 + 50 = 75
C) 25 + 50 = 75
What drawing would represent 0.29 + 0.07? Solve.
See Ms. Carlson's drawing.
92.6 + 650.2 + 8.47
751.27
130 - 23.45
106.55
Liz's plant was 3.3 inches tall at the start of the school year. Her plant is now 12.9 inches tall. How many inches did her plant grow?
9.6 inches
Amanda got 12.4 points on one assignment and 18 points on another assignment. She says she has about 30 points altogether. Is her statement reasonable?
Yes, it is reasonable because 12 + 18 = 30.
What expression represents the shaded parts of the model?
A) 0.3 + 2.4
B) 0.03 + 0.24
C) 0.3 + 0.24
D) 0.03 + 0.024
C) 0.3 + 0.24
Julia biked 3.65 miles from home to the library. She then biked 7.9 miles to soccer practice. How many miles did Julia bike from home to soccer practice?
11.55 miles
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
Ben spent 23.05 hours on an art project last month. This month, he spent 14.9 hours on the project. How many more hours did he spent last month on the art project than this month?
8.15 hours
Cooper read for 2.2 hours at home last week and this week he read for 4.9 hours at home. Is it reasonable to say that he read for about 6 hours at home over the last two weeks?
No, it is not reasonable. (2 + 5 = 7 is more reasonable)
What expression represents the shaded parts of the model?
A) 0.7 + 0.11
B) 0.07 + 1.1
C) 0.07 + 0.11
D) 0.7 + 1.1
A) 0.7 + 0.11
Oscar needs to get stuff for soccer. He needs a ball that costs $12.55, shoes that cost $36.40, and shorts that cost $17.26. How much money will Oscar spend?
$66.21
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
Ms. Carlson spent $63.82 on cookies. The chocolate chip cookies cost $24.71, the sugar cookies cost $12.99. If the rest of the money was spent on snickerdoodle cookies, how much did Ms. Carlson pay for snickerdoodle cookies?
$26.12
Write an equation that would represent a reasonable estimate for 58.6 - 9.1.
60 - 10 = 50 OR 59 - 9 = 50