Maths · Converting Fractions to Percentages
Triple Track
Drive the bar to , then work out the same amount as a percentage.
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Why this works
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.
Helping a child through Triple Track
It runs in 2 steps
- 1. Line them up. Drag any lane. Land all three on and watch the other two follow.
- 2. Under the flap. Two lanes are covered. is what percentage?
Hints, least revealing first
- Drag any lane and all three move together - they are one amount wearing three names.
- means the whole is cut into 8 equal pieces and you take 3.
- Per cent means "out of a hundred". Fill the hundred square and count the cells.
When they finish it: “Three names, one amount.”
4 11+ skills this exercise practises
Each of these has its own page, with a worked example on it. 1 of the 4 names the mistake that skill attracts.
- Convert decimal and percentageConvert one decimal to or from a percentage.
- Convert fraction and decimalConvert one familiar fraction to or from a decimal.
- Convert fraction and percentageConvert one familiar fraction to or from a percentage.
- Locate an equivalent valueLocate a fraction, decimal, or percentage at the same number-line position.
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Embed this exercise
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Triple Track touches 4 skills at once
Which means a child who struggles with it could be stuck on any one of them. A free diagnostic across all four subjects narrows it to the one.