Five-Minute Check (over Lesson 8–7)
Main Idea and Vocabulary
Example 1: Choose Reasonable Temperatures
Example 2: Choose Reasonable Temperatures
Example 3: Choose Reasonable Temperatures
Example 4: Give Reasonable Temperatures
Example 5: Give Reasonable Temperatures
Example 6: Give Reasonable Temperatures
• Choose and estimate reasonable temperatures.
• temperature
• degree
• Celsius (°C)
• Fahrenheit (°F)
Choose Reasonable Temperatures
Choose the more reasonable temperature for hot
water in a bathtub: 62°F or 102°F.
Normal body temperature is 98.6°F, so hot water in a
bathtub would be warmer than your body temperature.
Answer: So, 102°F is a more reasonable temperature.
Choose the most reasonable temperature for inside
a restaurant.
A. 5°C
B. 22°C
C. 40°C
D. 65°C
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B
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A
B
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D
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D
Choose Reasonable Temperatures
Choose the more reasonable temperature for ice
cream: 16°C or –2°C.
On the Celsius scale, water freezes at 0°C and ice
cream needs to be kept frozen. So, 16°C would be too
warm for the temperature of ice cream.
Answer: So, –2°C is a more reasonable temperature.
Choose the most reasonable temperature for a cold
glass of lemonade.
A. 10°F
B. 30°F
C. 34°F
D. 70°F
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B
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Choose Reasonable Temperatures
Choose the more reasonable temperature for a cup
of hot tea: 95°C or 15°C.
Water boils at 100°C, so a cup of hot tea would be hot
but not boiling, nor below normal body temperature at
15°C.
Answer: So, 95°F is a more reasonable temperature.
Choose the most reasonable temperature for a warm
piece of pizza.
A. 45°C
B. 65°C
C. 80°C
D. 95°C
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B
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Give Reasonable Temperatures
Give a reasonable estimate of the temperature in
degrees Fahrenheit and degrees Celsius for inside
a freezer.
The temperature inside a freezer should be colder than
room temperature and also cold enough for water to
freeze.
Answer: So, a reasonable temperature is
0°F and −10°C.
Which pair of temperatures is the most reasonable
estimate for going water skiing?
A. 20°F and −7°C
B. 35°F and 2°C
C. 55°F and 13°C
D. 85°F and 30°C
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B
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Give Reasonable Temperatures
Give a reasonable estimate of the temperature in
degrees Fahrenheit and degrees Celsius for water
in a Florida lake.
Water in a Florida lake should be warm but not boiling.
Answer: So, a reasonable temperature is 80°F and 25°C.
Which pair of temperatures is the most reasonable
estimate for going snow sledding?
A. −5°F and −22°C
B.
30°F and −2°C
C.
50°F and 10°C
D.
65°F and 18°C
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B
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Give Reasonable Temperatures
Give a reasonable estimate of the temperature in
degrees Fahrenheit and degrees Celsius for the
temperature of a snowball.
A snowball is made of snow. So, the temperature
should be a little less than freezing.
Answer: So, a reasonable temperature is
30°F and –1°C.
Which pair of temperatures is the most reasonable
estimate for watching a video in your family room?
A. 45°F and 8°C
B. 70°F and 22°C
C. 90°F and 33°C
D. 110°F and 43°C
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End of the Lesson
Five-Minute Check (over Lesson 8–7)
Image Bank
Math Tools
Length in the Customary System
The Metric System
(over Lesson 8-7)
Add.
12 h 14 min
+ 8 h 57 min
A.
20 h 43 min
B.
20 h 57 min
C.
D.
21 h 1 min
21 h 11 min
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B
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D
(over Lesson 8-7)
Add.
6h 18 min 40 s
+ 4h 25 min 10 s
A.
10 h 25 min 30 s
B.
10 h 43 min 50 s
C.
D.
10 h 53 min 50 s
11 h 3 min 50 s
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B
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D
(over Lesson 8-7)
Subtract.
3 h 48 min 20 s
– 1 h 24 min 40 s
A.
2h 24 min 40 s
B.
2 h 23 min 40 s
C.
D.
1 h 24 min 20 s
1 h 23 min 20 s
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(over Lesson 8-7)
Find the elapsed time from 8:35 A.M. to 11:20 A.M.
A.
2 h 35 min
B.
2 h 45 min
C.
2 h 55 min
D.
3 h 15 min
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B
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B
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D
(over Lesson 8-7)
Find the elapsed time from 10:15 P.M. to 6:10 A.M.
A.
7 h 5 min
B.
7 h 45 min
C.
7 h 55 min
D.
8 h 5 min
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B
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(over Lesson 8-7)
Paris’ family left at 8:45 A.M. They arrived at her
grandparent’s house at 2:12 P.M. How long did it take
them to get to her grandparent's house?
5 h 37 min
6 h 17 min
D.
6 h 33 min
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C.
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B
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B.
C
5 h 27 min
B
A.