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Maths · Fractions, decimals and percentages

Convert fraction and percentage

Convert one familiar fraction to or from a percentage.

Free to use and free to share. There is no sign-up, no score, and nothing a child does here is recorded or sent anywhere.

Practise it now

Drive the bar to 38, then work out the same amount as a percentage.

This exercise practises convert fraction and percentage alongside its own main skill, Converting Fractions to Percentages.

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A worked example

One question of the kind this skill is tested with, worked all the way through: the reasoning, and what the wrong answers are there to catch.

From 36 to a percentage

Write 36 as a percentage.

The 3 shaded parts of this bar are 0.5 of it, and that is 50% shaded.

  • A bar cut into 6 equal parts, with 3 of them shaded.
  1. 0.5%
  2. 3%
  3. 50%
  4. 500%

Answer: 50%

How you get there

Per cent means "out of 100", and 36 simplifies to 12, and 1 divided by 2 is 0.5, which is 50 parts out of every 100, so the shaded part of the bar is 50% of the whole.

Why the other answers tempt

Putting a % sign after the decimal does not turn it into a percentage.

If they are stuck, say this

The bar's 6 parts do not divide into 100, so simplify 36 first, then divide the top number by the bottom one and multiply by 100.

Now do it live in Triple Track

What this exercise is doing

Triple Track

Drive the bar to 38, then work out the same amount as a percentage.

This engine’s own main skill is Converting Fractions to Percentages. It practises convert fraction and percentage alongside it.

38 shades 3 of the 8 pieces of the bar. Dividing 3 by 8 gives exactly 0.375, and "per cent" just means "out of a hundred", so multiplying by 100 gives 37.5%. The three lanes stop at the same place on the board because they are not three amounts: they are one amount written three ways. Nothing was rounded anywhere - 3 divided by 8 stops dead after three decimal places.

  1. Step 1. Line them up. Drag any lane. Land all three on 38 and watch the other two follow.
  2. Step 2. Under the flap. Two lanes are covered. 38 is what percentage?

What to say if they get stuck

  1. Drag any lane and all three move together - they are one amount wearing three names.
  2. 38 means the whole is cut into 8 equal pieces and you take 3.
  3. Per cent means "out of a hundred". Fill the hundred square and count the cells.

Open Triple Track on its own page to share it

How convert fraction and percentage differs from the skills beside it

The same exercise practises several skills, and telling them apart is often the difficulty rather than the exercise itself. On this page the skill is: convert one familiar fraction to or from a percentage, and it stops where excludes finding a percentage of a quantity and chained unit conversion.

Related maths skills

All maths 11+ skills

Questions parents ask about convert fraction and percentage

Answered from what the skill map records about this skill, not from a template. Every answer here is on the page, and the same questions are the page's FAQ structured data.

Convert one familiar fraction to or from a percentage. It is one of 55 named maths skills in the 11+, in the fractions, decimals and percentages strand, and this page carries 1 interactive exercise that practises it.

Knowing which maths topic to practise is most of the work

A free diagnostic covers arithmetic, fractions, geometry, measure and data handling, and comes back with the topics to spend the next few weeks on.