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Class 7–8 Maths quiz — 17 October 2026

Questions and answers from this day. Play today's quiz to build your streak.

Question 1 · Circles

A circle has a radius of 21 cm. What is its area? (Use π = 22/7)

  1. A. 1408 cm²
  2. B. 66 cm²
  3. C. 2772 cm²
  4. D. 1386 cm² ✓

Answer: 1386 cm². Area = π × r² = 22/7 × 21 × 21 = 1386 cm².

Question 2 · Square roots

What is the square root of 625?

  1. A. 25 ✓
  2. B. 24
  3. C. 27
  4. D. 26

Answer: 25. 25 × 25 = 625, so √625 = 25.

Question 3 · Triangle area

A triangle has a base of 28 cm and a height of 14 cm. What is its area?

  1. A. 784 cm²
  2. B. 196 cm² ✓
  3. C. 42 cm²
  4. D. 210 cm²

Answer: 196 cm². Area = ½ × base × height = ½ × 28 × 14 = 196 cm².

Question 4 · Exponents

What is 5^2 × 5^2?

  1. A. 625 ✓
  2. B. 125
  3. C. 50
  4. D. 3125

Answer: 625. When you multiply powers of the same base, add the exponents: 5^4 = 625.

Question 5 · Averages

What is the average of 22, 32, 39, 24 and 43?

  1. A. 30
  2. B. 32 ✓
  3. C. 33
  4. D. 40

Answer: 32. Add the numbers: 22 + 32 + 39 + 24 + 43 = 160. Divide by 5: 160 ÷ 5 = 32.

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