Using a Calculator worksheet
10 GCSE practice questions with answers, free to print. Every sheet is generated, so you can make a fresh one whenever you need it.
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2 marks
Ben uses a calculator to work out \(36 + 17 \times 3\)
He types \(36 + 17\), presses equals, then types \(\times 3\) and presses equals again.
The display shows \(159\), which is not the right answer.
(a)Calculate the correct value of \(36 + 17 \times 3\)
(b)Explain what Ben did wrong.
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3 marks
Leila wants to use a calculator to work out
\(\frac{ 77.7 + 54.8 }{ 61 - 8 }\)
(a)State the calculation Leila should type into the calculator.
Use brackets in your answer.
(b)Calculate the value of the calculation.
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4 marks
A group of nine friends share the cost of a meal equally.
The total cost is £48.41.
(a)Use a calculator to work out how much each friend pays.
Give your answer to the nearest penny.
(b)Each friend pays the amount from part (a).
Calculate how much the 9 friends pay altogether.
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3 marks
A rectangular plot is being priced by area.
\(x = \frac{ 63 \times 45 }{ 4 }\)
(a)Use a calculator to work out \(x\).
Write down all the figures on your calculator display.
(b)State your answer to part (a) correct to 2 significant figures.
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2 marks
Use your calculator to work out
\(\frac{ 5.21 + 7.11 }{ 4 }\)
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3 marks
(a)
Write down the value a calculator gives for \((-44)^2\).
(b)Write down the value a calculator gives for \(-44^2\).
(c)Explain why the two answers are different.
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3 marks
Here are two calculations.
\(2^14\) and \(14^2\)
They use the same two numbers, swapped round.
(a)Use a calculator to work out both.
(b)Write down which of the two is larger.
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2 marks
Joel uses a calculator to work out \(48 + 17 \times 5\)
He types \(48 + 17\), presses equals, then types \(\times 5\) and presses equals again.
The display shows \(325\), which is not the right answer.
(a)Calculate the correct value of \(48 + 17 \times 5\)
(b)Explain what Joel did wrong.
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3 marks
Yusuf wants to use a calculator to work out
\(\frac{ 28.4 + 13.2 }{ 28 - 12 }\)
(a)Write down the calculation Yusuf should type into the calculator.
Use brackets in your answer.
(b)Find the value of the calculation.
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4 marks
A group of six walkers share the cost of a minibus equally.
The total cost is £68.68.
(a)Use a calculator to work out how much each walker pays.
Give your answer correct to the nearest penny.
(b)Each walker pays the amount from part (a).
Calculate how much the 6 walkers pay altogether.
Answers
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(a) \(87\)
(b) He pressed equals after 36 + 17, so the calculator added first and then multiplied the whole of 53 by 3. The calculation should be typed in one go, without pressing equals in the middle. -
(a) \((77.7 + 54.8) \div (61 - 8)\)
(b) \(2.5\) -
(a) \(\text{£}5.38\)
(b) \(\text{£}48.42\) -
(a) \(708.75\)
(b) \(710\) - \(3.08\)
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(a) \(1936\)
(b) \(-1936\)
(c) The brackets decide what is squared: in \((-44)^2\) the minus sign is inside, and in \(-44^2\) it is outside, so it is applied after the squaring. -
(a) \(2^14 = 16384\) and \(14^2 = 196\)
(b) \(2^14\) -
(a) \(133\)
(b) He pressed equals after 48 + 17, so the calculator added first and then multiplied the whole of 65 by 5. The calculation should be typed in one go, without pressing equals in the middle. -
(a) \((28.4 + 13.2) \div (28 - 12)\)
(b) \(2.6\) -
(a) \(\text{£}11.45\)
(b) \(\text{£}68.70\)