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9×GooGooCalc⌕

Comparing Fractions

Which one is bigger? Cross multiply, and see both drawn as bars.

First numerator · First denominator · Second numerator · Second denominator

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Adding & Subtracting Fractions

Unlike denominators, with the common denominator found by counting multiples — the step that is normally invisible.

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Cancel diagonally first, then multiply straight across. No common denominator needed.

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Dividing Fractions

Keep, change, flip — and this one actually shows you why flipping works.

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Subtracting Mixed Numbers

Borrowing a whole one and turning it into fraction pieces. The hardest thing in the fraction unit.