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Numeracy · Guided Practice

Basic Operations

8 questions with answers and video solutions. Try each one before revealing the answer.

1
Evaluate 7.4+12.85−3.6\displaystyle 7.4 + 12.85 - 3.6
Video solution coming soon
2
(a) Multiply 3.7\displaystyle 3.7 by 100\displaystyle 100
(b) Divide 58\displaystyle 58 by 1000\displaystyle 1000
Video solution coming soon
3
Evaluate 20−4×3\displaystyle 20 - 4 \times 3
Video solution coming soon
4
A water tank holds 250\displaystyle 250 litres.
68.5\displaystyle 68.5 litres are drawn off in the morning and 91.75\displaystyle 91.75 litres in the afternoon.
Calculate the volume of water remaining in the tank.
Video solution coming soon
5
A car is hired for a fixed charge of £24.50\displaystyle \pounds 24.50 plus £0.18\displaystyle \pounds 0.18 for every mile driven.
The car is driven 120\displaystyle 120 miles.
Calculate the total cost of the hire.
Video solution coming soon
6
A shop sells 39\displaystyle 39 tickets at £4.85\displaystyle \pounds 4.85 each.
By rounding each number to 1 significant figure, estimate the total takings.
Video solution coming soon
7
2018 P1 Q6
2 Marks

Tom thinks that the answer to the following calculation is 8.7.

27.2−4.6×3+4.7\displaystyle 27.2 - 4.6 \times 3 + 4.7

Is Tom correct?
Use your working to justify your answer.

8
2021 P1 Q1
2 Marks

Ben worked on a Saudi Arabian oil rig for 4 months. He was paid in Saudi Arabian Riyal.

Month Earnings (Riyal)
January 32 616
February 30 120
March 38 624
April 35 440

The exchange rate was 5 Riyal to the pound.
Calculate his mean monthly earnings over the 4 months. Give your answer in pounds.

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