Simplification & Approximation

JKSSB Class-IV & MTS · Mathematics · 100 practice questions with answers and explanations: 36 Easy, 30 Medium, 34 Hard.

Sample questions

Sample Easy question 1

Find the cube of 9.

  1. 719
  2. 723
  3. 726
  4. 729
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Answer: D. 9³ = 729.

Sample Medium question 2

Simplify: 20% of 350 - 15% of 200

  1. 34
  2. 37
  3. 40
  4. 43
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Answer: C. 20% of 350 = 70, 15% of 200 = 30; difference = 40.

Sample Hard question 3

Simplify: (3/5 - 1/4) ÷ (1/2 + 1/5)

  1. 0.4
  2. 0.45
  3. 0.5
  4. 0.55
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Answer: C. Numerator = 7/20, denominator = 7/10; result = 7/20 × 10/7 = 1/2 = 0.5.

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