Five-Minute Check (over Lesson 11–4)

Main Idea

Key Concepts: Units of Time

Example 1:Convert Units of Time

Example 2:Use Different Units of Measure

Example 3:Use Fractions in Measures

• I will convert units of time.

Convert Units of Time

Students spend about 360 minutes a day in school. How many hours a day do they spend in school?

Answer: So, the students spend 6 hours a day in school.

To convert smaller units of time to larger units, divide. Since 1 hour (h) = 60 min, divide 360 by 60.

360 ÷ 60 = 6

360 min = h

Convert Units of Time

Check Use mental math to check the answer.

300 min = 300 ÷ 60 or 5 h

420 min = 420 ÷ 60 or 7 h

Since 6 hours is between 5 and 7 hours, the answer is reasonable.

1. A

2. B

3. C

4. D0% 0%0%0%

A. 120 minutes

B. 240 minutes

C. 500 minutes

D. 720 minutes

The track team spends 7,200 seconds in track practice. How many minutes is this?

Use Different Units of Measure

Answer: So, 72 weeks = 1 year 20 weeks.

Since 52 weeks = 1 year, divide 72 by 52 to find the number of years.

72 ÷ 52 = 1 R20

1 R20 means 1 whole year and 20 weeks of another year.

Complete: 72 weeks = years weeks.

1. A

2. B

3. C

4. D0% 0%0%0%

A. 1 year 61 weeks

B. 2 years 8 weeks

C. 2 years 10 weeks

D. 3 years 0 weeks

Complete: 112 weeks = years weeks.

Use Fractions in Measure

How many days is 100 hours?

To convert a smaller unit to a larger unit, divide. Since 24 hours = 1 day, divide 100 by 24.

4 R4 means 4 whole days and 4 hours of another day.

100 ÷ 24 = 4 R4, or 416

Answer: So, 100 h = 4 days 4 hours or 4 days.16

100 h = d

1. A

2. B

3. C

4. D0% 0%0%0%

A. 3 weeks 11 days

B. 4 weeks

C. 4 weeks 5 days

D. 5 weeks 2 days

How many weeks is 33 days?

End of the Lesson

Five-Minute Check (over Lesson 11–4)

Image Bank

Math Tool Chest

Measure with a Ruler

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

8 c = fl oz

A. 124

B. 64

C. 128

D. 142

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

16 pt = qt

A. 7

B. 6

C. 8

D. 12

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

9 c = pt c

A. 3; 1

B. 3; 2

C. 4; 1

D. 4; 3

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

3 gal 3 qt = qt

A. 22

B. 20

C. 14

D. 15

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

9 qt = c

A. 36

B. 38

C. 42

D. 44

1. A

2. B

3. C

4. D0% 0%0%0%

(over Lesson 11–4)

Complete.

56 fl oz = pt

A. 3

B.

C.

D.