Practice questions available in McGraw Hill Math Grade 6 Answer Key PDF Lesson 18.7 Time will engage students and is a great way of informal assessment.
McGraw-Hill Math Grade 6 Answer Key Lesson 18.7 Time
Exercises
SOLVE
Question 1.
24 hours = ____________ seconds
Answer:
24 hours = 1,440 seconds.
Explanation:
24 hours = ?? seconds
Conversion:
1 hour = 60 seconds.
24 hours = 60 × 24
= 1,440 seconds.
Question 2.
35 days = ____________ hours
Answer:
35 days = 840 hours.
Explanation:
35 days = ?? hours.
Conversion:
1 day = 24 hours.
35 days = 24 × 35
= 840 hours.
Question 3.
365 days = ____________ minutes
Answer:
365 days = 525,600 minutes.
Explanation:
365 days = ?? minutes.
Conversion:
1 day = 1,440 minutes.
365 days = 1,440 × 365
= 525,600 minutes.
Question 4.
12 hours = ____________ days
Answer:
12 hours = 0.5 day or half a day.
Explanation:
12 hours = ?? days.
Conversion:
1 day = 24 hours.
12 hours = 12 ÷ 24
= 0.5 day or half a day.
Question 5.
52 weeks = ____________ days
Answer:
52 weeks = 364 days.
Explanation:
52 weeks = ?? days.
Conversion:
1 week = 7 days.
52 weeks = 7 × 52
= 364 days.
Question 6.
51 hours = ____________ minutes
Answer:
51 hours = 3,060 minutes.
Explanation:
51 hours = ?? minutes.
Conversion:
1 hour = 60 minutes.
51 hours = 60 × 51
= 3,060 minutes.
Question 7.
24 days = ____________ weeks
Answer:
24 days = 3.4 weeks.
Explanation:
24 days = ?? weeks.
Conversion:
1 week = 7 days.
24 days = 24 ÷ 7
= 3.4 weeks.
Question 8.
200 years = ____________ decades
Answer:
200 years = 20 decades.
Explanation:
200 years = ?? decades.
Conversion:
1 decade = 10 years.
200 years = 200 ÷ 10
= 20 decades.
Question 9.
3,000 years = ____________ centuries
Answer:
3,000 years = 30 centuries.
Explanation:
3,000 years = ?? centuries.
Conversion:
1 century = 100 years.
3,000 years = 3,000 ÷ 100
= 30 centuries
Question 10.
42 days = ____________ minutes
Answer:
42 days = 60,480 minutes
Explanation:
42 days = ?? minutes
Conversion:
1 day = 1,440 minutes.
42 days = 1,440 × 42
= 60,480 minutes
Question 11.
2 weeks = ____________ seconds
Answer:
2 weeks = 12,09,600 seconds
Explanation:
2 weeks = ?? seconds
Conversion:
1 week = 604,800 seconds.
2 weeks = 604,800 × 2
= 12,09,600 seconds
Question 12.
45 minutes = ____________ hours
Answer:
45 minutes = 0.75 hours.
Explanation:
45 minutes = ?? hours.
Conversion:
1 hour = 60 minutes.
45 minutes = 45 ÷ 60
= 0.75 hours.
Question 13.
If you got paid $800 and you worked 2.92 days, approximately how much did you make per hour?
Answer:
Amount paid per day = $11.42.
Explanation:
Amount paid = $800.
Number of days = 2.92.
Amount paid per day = Amount paid ÷ Number of days
= $800 ÷ 2.92
= $273.97.
Conversion:
1 day = 24 hours.
Amount paid per day = Amount paid per day ÷ 24
= $273.97 ÷ 24
= $11.42.
Question 14.
How much do you have to pay a rock band that will play for 2 hours and wants to be paid $15/ second?
Answer:
Amount paid for 2 hours = $108,000.
Explanation:
Number of hours = 2.
Amount paid per second = $15.
Conversion:
1 hour = 3,600 seconds.
2 hours = 3,600 × 2
= 7,200 seconds.
=> Amount paid for 2 hours = Amount paid per second × 7,200
= $15 × 7,200
= $108,000.
Question 15.
3 decades = _____________ hours
Assume 365 days per year.
Answer:
3 decades = 262,800 hours.
Explanation:
Conversion:
1 year = 365 days.
1 day = 24 hours.
=> 1 year = 365 × 24
= 8,760 hours.
1 decade = 10 years.
= 10 × 8760 hours
= 87,600 hours.
3 decades = 87,600 × 3
= 262,800 hours.
Question 16.
A man tells you he is 2,270,592,000 seconds old. How many years old is he if you assume 365 days per year?
Answer:
Number of years old a man is = 72.
Explanation:
Number of seconds old a man is = 2,270,592,000.
Conversion:
1 year = 365 days.
1 day = 24 hours.
=> 1 year = 365 × 24
=> 8,760 hours.
1 hour = 3,600 seconds.
8,760 hours = 8,760 × 3600
= 3,15,36,000 seconds.
Number of years old a man is = Number of seconds old a man is ÷ 3,15,36,000 seconds
= 2,270,592,000 ÷ 3,15,36,000 seconds
= 72.