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Mathematics Year 4 Practice 4 Time

3.2 Duration of time 9. Which is true?
A 3 millennia = 300 centuries
5. The diagram below shows the times Jia B 2 centuries = 20 decades
Sin started revising and fi nished revising. C 5 decades = 500 years
D 4 millennia = 40 decades
11 12 1 11 12 1 10. 52 hours =
10 2 10 2
9 3 9 3 A 1 day 3 hours
8 4 8 4
7 6 5 7 6 5 B 1 day 9 hours
C 2 days 4 hours
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Starting time Ending time D 2 days 5 hours

Calculate the amount of time Jia Sin took 11. 4 weeks 4 days =
to revise. A 28 days C 36 days
A 2 hours 30 minutes B 32 days D 44 days
B 2 hours 45 minutes 12. 11 years 6 months =
C 3 hours 10 minutes A 121 months C 133 months
D 3 hours 40 minutes B 124 months D 138 months

6. Calculate the duration from 1515 hours till 13. 30 decades 18 years =
2015 hours. A 3 centuries 18 years
A 4 hours B 3 centuries 81 years
B 4 hours 20 minutes C 30 centuries 18 years
C 5 hours D 30 centuries 81 years
D 5 hours 20 minutes
4.5 Basic operations involving time
4.3 Estimation of time 14. 2 weeks 3 days + 7 weeks 6 days =
A 8 weeks 4 days
7. Amin takes 45 minutes to make a clay
vase. Estimate the amount of time Amin B 9 weeks 5 days
takes to make 3 clay vases. C 10 weeks 2 days
A 2 hours 15 minutes D 11 weeks 4 days
B 2 hours 20 minutes 15. 3 centuries 4 decades 5 years + 3 centuries
C 2 hours 30 minutes 7 years =
D 2 hours 45 minutes A 5 centuries 4 decades 2 years
B 6 centuries 5 decades 2 years
Relationship involving units of time C 7 centuries 6 decades 4 years
4.4 D 8 centuries 3 decades 6 years
8. 2 millennia = centuries. 16. 8 days 21 hours – M = 4 days 3 hours.
A 2 Determine the value of M.
B 20 A 4 days 18 hours
C 200 B 4 days 21 hours
D 2000 C 5 days 3 hours
D 5 days 6 hours

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