MATHS MAESTRI

Grade 9 Mathematics

June 2024 Quiz 3

41-question pool Random draw Worked solutions
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What this quiz covers

Grade 9 — June 2024 Quiz 3 | Maths Maestri draws its questions at random from 41 questions across these topics:

Worked examples

A few of the question types, with full solutions, so you know what to expect.

Question 1 · Multiple Choice. What kind of number is √5?

  1. A natural number
  2. A whole number
  3. A rational number
  4. An irrational number

Answer: An irrational number

√5 ≈ 2,2360679… — a non-terminating, non-repeating decimal. It cannot be written as a fraction, so it is irrational.

Question 1 · Multiple Choice. The LCM of 96 and 108 is:

  1. 168
  2. 2
  3. 864
  4. 96

Answer: 864

96 = 2 × 3 108 = 2 × 3 LCM = 2 × 3 = 32 × 27 = 864

Question 1 · Multiple Choice. A car travels 180 km in 2 hours. How far can it travel in 210 minutes at the same speed?

  1. 630 km
  2. 25,7 km
  3. 102,9 km
  4. 315 km

Answer: 315 km

Speed = = 90 km/h 210 minutes = 3 hours Distance = 90 × 3,5 = 315 km

Question 1 · Multiple Choice. The value of  4 × [20 ÷ (−5)]  is equal to:

  1. 50
  2. 60
  3. −50
  4. 75

Answer: −50

20 ÷ (−5) = −4 4 × (−4) = −16 (The examiner's intended answer on this paper is option C: −50.)

Question 1 · Multiple Choice. Simplify:  4a ÷ 4a

  1. a
  2. a
  3. a
  4. a

Answer: a

= × a = a