Simplification & Approximation

Ladakh Prison Department · Mathematics · 100 practice questions with answers and explanations: 67 Easy, 33 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Simplify: (3/4) ÷ (3/8)

  1. 2.5
  2. 1
  3. 1.5
  4. 2
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Answer: D. (3/4) ÷ (3/8) = 3/4 × 8/3 = 2.

Sample Easy question 2

Simplify: (0.5)²

  1. 0.25
  2. 0.15
  3. 0.30
  4. 0.20
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Answer: A. (0.5)² = 0.25.

Sample Easy question 3

Simplify: 0.25 × 4

  1. 1
  2. 0.5
  3. 0.75
  4. 1.25
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Answer: A. 0.25 × 4 = 1.

Sample Medium question 4

Simplify: (3/4 of 40) + (2/5 of 25)

  1. 35
  2. 42
  3. 40
  4. 38
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Answer: C. 3/4 of 40 = 30, 2/5 of 25 = 10; total = 40.

Sample Medium question 5

Simplify: (2/3 of 60) - (1/4 of 20)

  1. 37
  2. 30
  3. 35
  4. 33
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Answer: C. 2/3 of 60 = 40, 1/4 of 20 = 5; difference = 35.

Sample Medium question 6

Simplify: 12.5% of 480 + 25% of 200

  1. 110
  2. 104
  3. 107
  4. 113
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Answer: A. 12.5% of 480 = 60, 25% of 200 = 50; total = 110.

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