Five-Minute Check (over Lesson 11–7)
Main Idea and Vocabulary
Key Concept: Metric Units of Length
Example 1: Select an Appropriate Unit
Example 2: Convert Larger Units to Smaller Units
Example 3: Convert Smaller Units to Larger Units
Metric Rulers
• I will choose an appropriate metric unit for
measuring length and convert metric units of
length.
• metric system
• meter
• centimeter
• kilometer
• millimeter
Select an Appropriate Unit
Which unit would you use to measure the height
of a street light pole: millimeter, centimeter,
meter, or kilometer?
The height of a street light pole is much greater
than the width of a pinky finger but much smaller
than 6 city blocks.
Answer: So, a meter is an appropriate unit of
measure.
Which unit would you use to measure the width
of a text book?
A. millimeter
B. centimeter
C. meter
D. kilometer
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A
B
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4.
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C
A
B
C
C
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C
Convert Larger Units to
Smaller Units
An art project required strips of paper 8 centimeters
long. How many millimeters long is each strip?
Convert Larger Units to
Smaller Units
You need to convert 8 centimeters to millimeters.
8 cm =
mm A larger unit (cm) is being converted to a
smaller unit (mm), so you will multiply.
8 × 10 = 80
Since 1 cm = 10 mm, multiply 8 by 10.
Answer: So, 8 cm = 80 mm. The art project required
strips of paper 80 millimeters long.
Convert 5 meters to centimeters.
A. 5 cm
B. 50 cm
C. 500 cm
D. 5,000 cm
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B
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D
Convert Smaller Units to
Larger Units
A high school track measures 250 meters.
Luis ran 12 times around the track. How
many kilometers did he run?
Step 1 Find the length in meters.
number of laps
12
length of one lap
×
250 m
total length
=
3,000 m
Convert Smaller Units to
Larger Units
Step 2 Convert 3,000 meters to kilometers.
3,000 m =
km
3,000 ÷ 1,000 = 3
A smaller unit (m) is being
converted to a larger unit
(km), so you will divide.
Since 1,000 m = 1 km,
divide 3,000 by 1,000.
Answer: So, 3,000 m = 3 km. Luis ran 3 kilometers
total around the high school track.
Convert 70 millimeters to centimeters.
A. 7 cm
B. 70 cm
C. 700 cm
D. 7,000 cm
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B
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D
End of the Lesson
Five-Minute Check (over Lesson 11–7)
Image Bank
Math Tool Chest
Metric Rulers
(over Lesson 11–7)
Find the elapsed time.
6:40 A.M. to 11:17 A.M.
A. 4 h 37 min
B. 4 h 35 min
C. 5 h 34 min
D. 5 h 32 min
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B
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C
A
B
C
D
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D
(over Lesson 11–7)
Find the elapsed time.
1:25 P.M. to 8:10 P.M.
A. 5 h 6 min
B. 5 h 12 min
C. 6 h 32 min
D. 6 h 45 min
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B
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C
A
B
C
D
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D
(over Lesson 11–7)
Find the elapsed time.
10:36 A.M. to 4:26 P.M.
A. 5 h 55 min
B. 5 h 50 min
C. 5 h 40 min
D. 6 h 10 min
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B
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C
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B
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D
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D
(over Lesson 11–7)
Find the elapsed time.
10:13 P.M. to 7:06 A.M.
A. 8 h 53 min
B. 8 h 52 min
C. 7 h 53 min
D. 7 h 57 min
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0%
A
B
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C
A
B
C
D
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D
(over Lesson 11–7)
Find the elapsed time.
9:40 A.M. to 1:55 P.M.
A. 4 h 5 min
B. 4 h 15 min
C. 4 h 25 min
D. 4 h 35 min
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B
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C
A
B
C
D
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D
(over Lesson 11–7)
Find the elapsed time.
6:22 P.M. to 2:34 A.M.
A. 8 h 24 min
B. 8 h 16 min
C. 8 h 12 min
D. 8 h 6 min
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0%
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B
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C
A
B
C
D
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D