Free practice on Simple Interest, Rate, Time and Proportion for Class 5, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
Find the simple interest: Principal = 10,000 FCFA, Rate = 5%, Time = 2 years. Interest in FCFA = ?
Write your answer, then check below.
Answer:
I = P × R × T ÷ 100 = 10000 × 5 × 2 ÷ 100 = 1000 FCFA.
Find the simple interest: Principal = 20,000 FCFA, Rate = 3%, Time = 1 year. Interest in FCFA = ?
Write your answer, then check below.
Answer:
I = 20000 × 3 × 1 ÷ 100 = 600 FCFA.
3 exercise books cost 600 FCFA. How much do 5 books cost in FCFA?
Write your answer, then check below.
Answer:
1 book = 600 ÷ 3 = 200 FCFA, so 5 books = 1000 FCFA.
2 kg of rice cost 1600 FCFA. What is the cost of 1 kg in FCFA?
Write your answer, then check below.
Answer:
4 taps fill a tank in 6 hours. How many hours will 2 taps take?
Write your answer, then check below.
Answer:
Fewer taps take MORE time (inverse proportion): 4 × 6 = 2 × 12.
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