AI generatedRatio, proportion and rates of changeKey Stage 3

Simplifying a ratio involving decimals

Every part of a ratio must be multiplied or divided by the same non-zero number.

  • Every part of a ratio must be multiplied or divided by the same non-zero number.
  • Multiply all parts by 10, 100 or 1000 to remove the decimal places.
  • Then divide every part by the highest common factor. Do not round the parts.

Example 1

Write this ratio in simplest whole-number form.

Multiply both parts by 10.Divide both parts by their highest common factor.

Example 2

Write this ratio in simplest whole-number form.

Multiply both parts by 10.Divide both parts by their highest common factor.

Remember
Use the worked steps to check your method, not just the final answer.

Your turn

Question 1

Write this ratio in simplest whole-number form.

Check answer
Multiply both parts by 10.Divide both parts by their highest common factor.
Question 2

Write this ratio in simplest whole-number form.

Check answer
Multiply both parts by 10.Divide both parts by their highest common factor.
Question 3

Write this ratio in simplest whole-number form.

Check answer
Multiply both parts by 10.Divide both parts by their highest common factor.
Question 4

Write this ratio in simplest whole-number form.

Check answer
Multiply both parts by 10.Divide both parts by their highest common factor.
Question 5

Write this ratio in simplest whole-number form.

Check answer
Multiply both parts by 10.Divide both parts by their highest common factor.
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