Addition and subtraction with standard form

Sample Addition and subtraction with standard form questions

A few of the 26 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 13 marksGrade 4-5
   Work out $5 \times 10^4 - 1.6 \times 10^3$. Give your answer in standard form.
   Show the worked solution

What are the common mistakes in Addition and subtraction with standard form?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

• Adds numbers in standard form without first matching their powers of ten

  Added the coefficients directly and kept the smaller power of 10 - the powers of 10 must be aligned first

• Subtracts the two values in the wrong order

  Subtracted the larger number's coefficient from the smaller one's - the order of subtraction was reversed

• Adds the mantissas of two standard-form numbers directly without first rewriting them to the same power of ten

  Adds the mantissas directly (3+9=12) without first rewriting both numbers to the same power of 10, giving 12x10^7 instead of correctly aligning to get 3.9x10^7.

Quick answers about Addition and subtraction with standard form

How many Addition and subtraction with standard form practice questions are there?

There are 26 self-marking GCSE and IGCSE Maths questions on Addition and subtraction with standard form, written for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Extended tier. Each one is marked instantly and has a full worked solution.

Do I need an account to practise Addition and subtraction with standard form?

No. You can start practising Addition and subtraction with standard form straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.