QTS Numeracy Skills for Teachers 4

Question 1

Convert 0.045 to a percentage.

Accepted Answer

4.5%

Answer

To convert a decimal to a percentage, multiply by 100: 0.045 × 100 = 4.5%.

Question 2

A reading test has a mean score of 72 and a standard deviation of 8. A pupil scores 88. How many standard deviations above the mean is this?

Accepted Answer

2

Answer

88 − 72 = 16. 16 ÷ 8 = 2. The pupil is 2 standard deviations above the mean.

Question 3

What is the lowest common multiple (LCM) of 6 and 8?

Accepted Answer

24

Answer

Multiples of 6: 6, 12, 18, 24. Multiples of 8: 8, 16, 24. The lowest common multiple is 24.

Question 4

A teacher spends 2 hours and 45 minutes marking on Monday and 1 hour and 50 minutes on Tuesday. How long in total?

Accepted Answer

4 hours 35 minutes

Answer

2h 45min + 1h 50min = 3h 95min = 4h 35min (since 95 min = 1h 35min).

Question 5

What is 3/7 as a decimal to two decimal places?

Accepted Answer

0.43

Answer

3 ÷ 7 = 0.4285... which rounds to 0.43 to two decimal places.

QTS Practice Test