AI generatedNumberKS3 / GCSE

Subtracting numbers in standard form

Subtracting numbers in standard form.

  • is standard form when for positive numbers.
  • Multiply or divide: combine the leading numbers and use index laws. Add or subtract: make the powers match first.
  • Check the leading number at the end and adjust the power if needed.

Example 1

Write the answer in standard form.

Make the powers of 10 equal before combining the leading numbers.

Example 2

Write the answer in standard form.

Make the powers of 10 equal before combining the leading numbers.

Your turn

Question 1

Write the answer in standard form.

Check answer
Make the powers of 10 equal before combining the leading numbers.
Question 2

Write the answer in standard form.

Check answer
Make the powers of 10 equal before combining the leading numbers.
Question 3

Write the answer in standard form.

Check answer
Make the powers of 10 equal before combining the leading numbers.
Question 4

Write the answer in standard form.

Check answer
Make the powers of 10 equal before combining the leading numbers.
Question 5

Write the answer in standard form.

Check answer
Make the powers of 10 equal before combining the leading numbers.
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