Online Test — Rational Numbers
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
Which of the following is a rational number?
√2
π
0.333...
All of these
Explanation: 0.333... = 1/3 which is of form p/q
Question 2 of 10
What is the additive inverse of -7/9?
7/9
-7/9
9/7
-9/7
Explanation: Additive inverse of -a/b is a/b
Question 3 of 10
Which property is shown: (2/3 × 4/5) × 1/2 = 2/3 × (4/5 × 1/2)?
Commutative
Associative
Distributive
Closure
Explanation: Grouping changed, so associative property
Question 4 of 10
What is the standard form of -15/25?
-3/5
3/5
-5/3
5/3
Explanation: Divide numerator and denominator by HCF 5
Question 5 of 10
Which rational number is greater: 3/7 or 4/9?
3/7
4/9
Both equal
Cannot compare
Explanation: Cross multiply: 3×9=27, 4×7=28, so 4/9 > 3/7
Question 6 of 10
What is the product of 2/3 and its multiplicative inverse?
0
1
2/3
3/2
Explanation: Multiplicative inverse × number = 1
Question 7 of 10
Arrange in ascending order: -2/3, 1/2, -1/4, 3/4
1/2, 3/4, -1/4, -2/3
-2/3, -1/4, 1/2, 3/4
-1/4, -2/3, 1/2, 3/4
-2/3, 1/2, -1/4, 3/4
Explanation: On number line: -0.67, -0.25, 0.5, 0.75
Question 8 of 10
Simplify: 3/4 ÷ 1/2
3/8
1/2
3/2
1/8
Explanation: 3/4 × 2/1 = 6/4 = 3/2
Question 9 of 10
A ribbon of length 5/6 m is cut into 5 equal pieces. Length of each piece?
1/6 m
5/30 m
1/5 m
5/6 m
Explanation: (5/6) ÷ 5 = 5/6 × 1/5 = 5/30 = 1/6 m
Question 10 of 10
Which property is used: 2/3 × (1/4 + 1/2) = 2/3 × 1/4 + 2/3 × 1/2?
Commutative
Associative
Distributive
Identity
Explanation: Multiplication distributes over addition