QTS Numeracy Skills for Teachers 3 — Questions and Answers
Question 1: A class set of 30 books costs £127.50. What is the cost per book?
- £4.25 (Correct answer)
- £4.50
- £3.75
- £5.00
Correct answer: £4.25
£127.50 ÷ 30 = £4.25 per book.
Question 2: What is the median of: 14, 7, 19, 3, 11, 22, 8?
- 11 (Correct answer)
- 14
- 11.5
- 10
Correct answer: 11
Ordered: 3, 7, 8, 11, 14, 19, 22. The middle value (4th of 7) is 11.
Question 3: A school trip costs £12.50 per pupil. There are 34 pupils attending. What is the total cost?
- £425 (Correct answer)
- £408
- £375
- £450
Correct answer: £425
£12.50 × 34 = £425. (£12.50 × 30 = £375; £12.50 × 4 = £50; total = £425.)
Question 4: A pupil's mark improved from 48 to 60. What is the percentage increase?
- 25% (Correct answer)
- 12%
- 20%
- 15%
Correct answer: 25%
Increase = 12. Percentage increase = (12/48) × 100 = 25%.
Question 5: What is 7 squared minus 4 cubed?
- −15 (Correct answer)
- 17
- 33
- −17
Correct answer: −15
7² = 49. 4³ = 64. 49 − 64 = −15.
Question 6: A school has 420 pupils. 35% receive free school meals. How many pupils is this?
- 147 (Correct answer)
- 140
- 126
- 168
Correct answer: 147
35% of 420 = 0.35 × 420 = 147.
QTS Numeracy Skills for Teachers 3
A class set of 30 books costs £127.50.
What is the cost per book?