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Cambridge IGCSE Maths (0580) · Topic 1: Number · 1.14

Cambridge IGCSE Maths 0580 Using a Calculator Questions

Using a Calculator questions with worked answers for Cambridge IGCSE Mathematics (0580). Each question says whether it is Core or Extended and whether it is for a calculator or non-calculator paper. Try each one before you open the answer.

Practise using a calculator →Using a Calculator notes

What the syllabus asks

Summarised in our own words: check the exact wording in the official 0580 syllabus.

Using a Calculator questions: Core

For everyone: Core students (Papers 1 and 3) and Extended students (Papers 2 and 4).

Question 1 Core calculator · easy

Use your calculator to work out \(\frac{4.8 + 3.75}{2.5^2}\).

Show the worked answer
  1. Numerator: \(4.8 + 3.75 = 8.55\).
  2. Denominator: \(2.5^2 = 6.25\).
  3. \(8.55 \div 6.25 = 1.368\)

Answer: \(1.368\)

Question 2 Core calculator · easy

Work out \(\sqrt{18.4} \times 3.1\). Give your answer correct to 3 significant figures.

Show the worked answer
  1. \(\sqrt{18.4} = 4.2895\ldots\)
  2. \(4.2895\ldots \times 3.1 = 13.297\ldots\)

Answer: \(13.3\)

Question 3 Core calculator · easy

(a) Work out \(\frac{12.6 \times 3.85}{4.2 + 1.35}\). Write down all the figures on your calculator display.
(b) Give your answer to part (a) correct to 2 decimal places.

Show the worked answer
  1. Top: \(12.6 \times 3.85 = 48.51\). Bottom: \(4.2 + 1.35 = 5.55\).
  2. (a) \(48.51 \div 5.55 = 8.740540\ldots\)
  3. (b) \(8.74\)

Answer: (a) \(8.740540540\ldots\) (b) \(8.74\)

Question 4 Core calculator · easy · 1 mark

A calculator display shows 6.02E+05. Write this number as an ordinary number.

Show the answer and mark scheme
  • B1 602 000 cao

Answer: \(602\,000\)

Question 5 Core calculator · medium

Use a calculator to find the exact value of \(\frac{5.6^2 - 1.36}{\sqrt{2.25}}\).

Show the worked answer
  1. \(5.6^2 = 31.36\), so the top is \(31.36 - 1.36 = 30\).
  2. \(\sqrt{2.25} = 1.5\)
  3. \(30 \div 1.5 = 20\)

Answer: \(20\)

Question 6 Core calculator · medium

A calculator shows a time of \(3.85\) hours.
Write this time in hours and minutes.

Show the worked answer
  1. \(0.85\) hours \(= 0.85 \times 60 = 51\) minutes.

Answer: \(3\) hours \(51\) minutes

Question 7 Core calculator · medium

Work out \(\frac{1}{0.25} + 3.2^{-1}\).

Show the worked answer
  1. \(\frac{1}{0.25} = 4\)
  2. \(3.2^{-1} = \frac{1}{3.2} = 0.3125\)
  3. \(4 + 0.3125 = 4.3125\)

Answer: \(4.3125\)

Question 8 Core calculator · medium · 2 marks

(a) Use your calculator to work out \(\sqrt[3]{45.2}\). Write down all the figures on your calculator display.

(b) Give your answer to part (a) correct to 3 significant figures.

Show the answer and mark scheme
  • B1 (a) 3.562154… (at least 3.5621)
  • B1 (b) 3.56 FT their (a)

Answer: (a) \(3.562154\ldots\) (b) \(3.56\)

Question 9 Core calculator · hard

Work out \(\sqrt[3]{\frac{5.6 \times 10^4}{2.8}}\). Give your answer correct to 3 significant figures.

Show the worked answer
  1. \(\frac{5.6 \times 10^4}{2.8} = 20\,000\)
  2. \(\sqrt[3]{20\,000} = 27.144\ldots\)

Answer: \(27.1\)

Question 10 Core calculator · hard · 3 marks

Use your calculator to work out \(\dfrac{\sqrt{7.2^3 - 4.1^3}}{2.5 + \frac{1}{0.4}}\).

Give your answer correct to 3 significant figures.

Show the answer and mark scheme
  • B1 numerator 17.44… or 304.3… inside the root
  • B1 denominator 5
  • B1 3.49 (3.4889…)

Answer: \(3.49\)

Every question on this page is original, written for IGCSE Math Revision rather than taken from Cambridge papers, and each answer was re-solved independently before publishing. Questions with a mark scheme come from our 0580 practice bank (M method, A accuracy, B independent marks).

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Questions students ask

Which Cambridge 0580 papers can test using a calculator?

Using a Calculator is on both tiers (syllabus 1.14), so it can come up on Core Papers 1 (non-calculator) and 3 (calculator), and Extended Papers 2 (non-calculator) and 4 (calculator). Extended candidates also need the Extended parts listed on this page. Half of each tier's marks are on a non-calculator paper, so practise the non-calculator questions without one.

Are these Cambridge past-paper questions?

No. Every question here was written for IGCSE Math Revision in the style of the 0580 papers, and each answer was checked independently before publishing. For real exam practice, use the Cambridge past papers linked from our 0580 past papers page.

Where can I practise more using a calculator questions?

In the 0580 practice for topic 1 (Number), where every question is marked and tagged Core or Extended. Practice is part of the IGCSE plan, with a free preview; the questions on this page are free.

More number questions