BKSB Number and Calculation 3

Question 1

What is the square root of 144?

Accepted Answer

12

Answer

12 × 12 = 144, so √144 = 12.

Question 2

A store sells 3 items for £7.50. What is the cost of one item?

Accepted Answer

£2.50

Answer

£7.50 ÷ 3 = £2.50 per item.

Question 3

Round 4,867 to the nearest hundred.

Accepted Answer

4,900

Answer

The tens digit is 6 (≥ 5), so 4,867 rounds up to 4,900.

Question 4

If a = 5 and b = 3, what is 2a + 3b?

Accepted Answer

19

Answer

2(5) + 3(3) = 10 + 9 = 19.

Question 5

A train journey costs £14.60 for an adult and £8.30 for a child. What is the total cost for 2 adults and 3 children?

Accepted Answer

£53.90

Answer

2 × £14.60 + 3 × £8.30 = £29.20 + £24.90 = £54.10.

(BKSB) Basic and Key Skills Builder Practice Test