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Fractions

Map

Arrows point from what you learn first to what it opens. Right-click a concept (or press and hold it) for its lessons and stories.

  • Proven to depth123
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  • Comes back deeper
DecimalsEquivalent fractionsFractionsPercentagesRational numbersIn Number SystemsDivisionIn ArithmeticThe number lineIn Number SystemsUnit conversionIn MeasurementInterestIn FinancePlace valueIn Number Systems

Learning path

In the order the concepts build on each other.

  1. FractionsLockedA fraction names part of a whole cut into equal parts: in 3/4 the bottom number says the whole is cut into 4 equal parts, and the top number that you have 3 of them. Fractions have their own places on the number line, some are more than one, and every fraction is a division.Opens after: Division, The number line
  2. DecimalsLockedPlace value carries on to the right of the ones: tenths, then hundredths, each ten times smaller. A decimal point marks where the ones end, so 2.7 is 2 ones and 7 tenths. 0.5 is a half and 0.25 a quarter. Decimals are compared place by place from the left.Opens after: Place value, Fractions
  3. Equivalent fractionsLockedDifferent fractions can be the same amount: 1/2 = 2/4 = 4/8. Multiplying the top and bottom by the same number gives an equivalent fraction. With the same top number, a bigger bottom number means smaller parts, so 1/3 is less than 1/2.Opens after: Fractions
  4. PercentagesLockedPercent means out of a hundred: 25% is 25 out of every 100, the fraction 25/100. 100% is the whole, 50% half, 25% a quarter and 10% a tenth. Because every percent counts out of the same hundred, percents make amounts easy to compare.Opens after: Decimals

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