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Primary 6 · Ratio · Question type 1.4

P6 Ratio: Converting Between Fractions and Ratios

Read the same bar as a ratio between two parts and as a fraction of the whole.

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Primary 6, on the MOE Primary Mathematics syllabus.

In the Ratio chapter10 question types · see the chapter

The lesson · 2 minutes 52 seconds

How do you convert between fractions and ratios in P6?

Watch: fractions and ratio, 3 : 5 read two ways

Another worked example

A worked example

The number of Adam's bottle caps to Grace's is in the ratio 3 : 5. What fraction of all the caps are Adam's?

The working · Four lines

The step-by-step working

Written out in full, the way it should appear on paper.

  1. Adam : Grace = 3 : 5
  2. the whole = 3 + 5 = 8 units
  3. Adam's caps = 3/8 of all the caps
  4. Grace's caps = 5/8 of all the caps

Adam's caps are 3/8 of all the caps.

Practise · Modelled on top school exam questions

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Write the seedling ratio

Write the ratio in the order requested.

Zarina has a tray of seedlings. 2/9 of the seedlings are chilli seedlings and the rest are tomato seedlings. Write the ratio of the number of chilli seedlings to the number of tomato seedlings.

Show the step-by-step solution
  1. whole = 9 units
  2. chilli = 2 units
  3. tomato = 9 - 2 = 7 units
  4. ratio = 2 : 7

Ans: 2 : 7

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