![James Tanton on Twitter: "Typical school approach to fractions is muddled, to say the least. "A fraction" is a portion of pie. "Multiply = of" (2/3 x 4/5 is "2/3 of 4/5") " James Tanton on Twitter: "Typical school approach to fractions is muddled, to say the least. "A fraction" is a portion of pie. "Multiply = of" (2/3 x 4/5 is "2/3 of 4/5") "](https://pbs.twimg.com/media/FyRuNMdaEAAlJ-l.png)
James Tanton on Twitter: "Typical school approach to fractions is muddled, to say the least. "A fraction" is a portion of pie. "Multiply = of" (2/3 x 4/5 is "2/3 of 4/5") "
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Which number replace the question mark? | Brain teasers, Math puzzles brain teasers, Math riddles brain teasers
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