School Olympiads - International Mathematics Olympiad (IMO)

Fractions, Decimals & Percentages Basics question bank (Class 5 & 6 - Mathematical Reasoning & Numbers)

Practice 5 free School Olympiads - International Mathematics Olympiad (IMO) Class 5 & 6 - Mathematical Reasoning & Numbers - Fractions, Decimals & Percentages Basics questions with answers and step-by-step solutions.

Q1.
A water tank is $\frac{3}{5}$ full. When 15 litres of water are drawn out, it becomes $\frac{3}{8}$ full. What is the total capacity of the water tank in litres?

(A)
{'key': 'A', 'text': '60 litres'}
(B)
{'key': 'B', 'text': '66.67 litres'}
(C)
{'key': 'C', 'text': '75 litres'}
(D)
{'key': 'D', 'text': '80 litres'}
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Q2.
In an Olympiad competition problem on Fractions, Decimals & Percentages Basics:
Find the numerical value of $X$ satisfying $$X = (18 \times 5) - 23 + 3$$.

(A)
{'key': 'A', 'text': '70'}
(B)
{'key': 'B', 'text': '74'}
(C)
{'key': 'C', 'text': '66'}
(D)
{'key': 'D', 'text': '79'}
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