Let’s solve each problem step by step using the conversion chart provided.
We’ll go one by one, and I’ll show my work so you can follow along.
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1. 3 minutes = ___ seconds
→ 1 minute = 60 seconds
→ 3 × 60 =
180 seconds
2. 480 minutes = ___ hours
→ 1 hour = 60 minutes
→ 480 ÷ 60 =
8 hours
3. 11 hours = ___ minutes
→ 1 hour = 60 minutes
→ 11 × 60 =
660 minutes
4. 5 days = ___ hours
→ 1 day = 24 hours
→ 5 × 24 =
120 hours
5. 12 hours = ___ day
→ 1 day = 24 hours
→ 12 ÷ 24 =
0.5 day (or half a day)
6. 1 day = ___ minutes
→ 1 day = 24 hours → 24 × 60 =
1440 minutes
7. 4 weeks = ___ days
→ 1 week = 7 days
→ 4 × 7 =
28 days
8. 6 weeks = ___ hours
→ 1 week = 7 days → 6 × 7 = 42 days
→ 42 days × 24 hours/day = 42 × 24
Let’s calculate: 40×24=960, 2×24=48 → 960+48=
1008 hours
9. 1680 hours = ___ weeks
→ First, convert to days: 1680 ÷ 24 = ?
24 × 70 = 1680 → so 70 days
→ Then convert to weeks: 70 ÷ 7 =
10 weeks
10. 1 month (28 days) = ___ weeks
→ 28 ÷ 7 =
4 weeks
11. 2 years = ___ months
→ 1 year = 12 months
→ 2 × 12 =
24 months
12. 60 months = ___ years
→ 60 ÷ 12 =
5 years
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Now the right column:
13. 0.5 year = ___ months
→ 0.5 × 12 =
6 months
14. 3 decades = ___ months
→ 1 decade = 10 years → 3 × 10 = 30 years
→ 30 × 12 =
360 months
15. 7 decades = ___ years
→ 7 × 10 =
70 years
16. 45 years = ___ decades
→ 45 ÷ 10 =
4.5 decades
17. 1 century = ___ months
→ 1 century = 100 years
→ 100 × 12 =
1200 months
18. 600 years = ___ centuries
→ 600 ÷ 100 =
6 centuries
19. 340 years = ___ decades
→ 340 ÷ 10 =
34 decades
20. 0.5 century = ___ months
→ 0.5 × 100 = 50 years
→ 50 × 12 =
600 months
21. 5 decades = ___ century
→ 5 ÷ 10 =
0.5 century
22. 240 months = ___ decades
→ First, convert to years: 240 ÷ 12 = 20 years
→ Then to decades: 20 ÷ 10 =
2 decades
23. 100 decades = ___ centuries
→ 100 ÷ 10 =
10 centuries
24. 2400 years = ___ centuries
→ 2400 ÷ 100 =
24 centuries
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✔ All answers checked and verified.
Final Answer:
1. 180
2. 8
3. 660
4. 120
5. 0.5
6. 1440
7. 28
8. 1008
9. 10
10. 4
11. 24
12. 5
13. 6
14. 360
15. 70
16. 4.5
17. 1200
18. 6
19. 34
20. 600
21. 0.5
22. 2
23. 10
24. 24
Parent Tip: Review the logic above to help your child master the concept of conversion worksheet 5th grade.
