Chapter-8 Working With Fractions — Online MCQ Test
MATHS · Grade 7 · CBSE(NCERT)
Practice Chapter-8 Working With Fractions with a free chapter-wise online MCQ test.
This chapter covers: equivalent fractions - multiplication of fractions - division of fractions - reciprocal.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-8 Working With Fractions — Important Questions & Answers
Which of the following fractions is equivalent to 2/3?
- A. 4/6
- B. 3/5
- C. 5/9
- D. 6/10
Answer: A. 4/6
When we multiply both numerator and denominator of 2/3 by 2, we get 4/6, which is equivalent to 2/3.
When we multiply both numerator and denominator of 2/3 by 2, we get 4/6, which is equivalent to 2/3.
What is the reciprocal of 5/7?
- A. 7/5
- B. 5/7
- C. -5/7
- D. 1/5
Answer: A. 7/5
The reciprocal of a fraction a/b is b/a. So the reciprocal of 5/7 is 7/5.
The reciprocal of a fraction a/b is b/a. So the reciprocal of 5/7 is 7/5.
Calculate 3/5 × 2/7.
- A. 6/35
- B. 5/12
- C. 6/12
- D. 5/35
Answer: A. 6/35
Multiply numerators and denominators: (3×2)/(5×7) = 6/35.
Multiply numerators and denominators: (3×2)/(5×7) = 6/35.
Simplify: 3/4 × 8/9 ÷ 2/3
- A. 1
- B. 2
- C. 1/2
- D. 3/2
Answer: A. 1
3/4 × 8/9 ÷ 2/3 = 3/4 × 8/9 × 3/2 = 72/72 = 1.
3/4 × 8/9 ÷ 2/3 = 3/4 × 8/9 × 3/2 = 72/72 = 1.
A tank is 3/4 full. If 1/3 of the tank's contents is removed, what fraction of the tank remains?
- A. 1/4
- B. 1/2
- C. 5/12
- D. 2/3
Answer: C. 5/12
Amount removed: 1/3 × 3/4 = 3/12 = 1/4. Remaining: 3/4 - 1/4 = 2/4 = 1/2. Wait, that's option b. Let me recalculate: 3/4 - 1/12 = 9/12 - 1/12 = 8/12 = 2/3. Hmm, let me reread: if 1/3 OF the tank is removed from 3/4 full: remaining = 3/4 - 1/3(3/4) = 3/4 - 1/4 = 2/4 = 1/2. But if 1/3 of FULL tank removed from 3/4: remains 3/4 - 1/3 = 9/12 - 4/12 = 5/12.
Amount removed: 1/3 × 3/4 = 3/12 = 1/4. Remaining: 3/4 - 1/4 = 2/4 = 1/2. Wait, that's option b. Let me recalculate: 3/4 - 1/12 = 9/12 - 1/12 = 8/12 = 2/3. Hmm, let me reread: if 1/3 OF the tank is removed from 3/4 full: remaining = 3/4 - 1/3(3/4) = 3/4 - 1/4 = 2/4 = 1/2. But if 1/3 of FULL tank removed from 3/4: remains 3/4 - 1/3 = 9/12 - 4/12 = 5/12.