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Think about it (lemmy.world)

submitted 9 months ago by [email protected] to c/[email protected]

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[–] [email protected] 10 points 9 months ago* (last edited 9 months ago) (1 children)

X/0.5 = X*2

Division by less than 1 is essentially multiplying with extra steps

[–] [email protected] 5 points 9 months ago (1 children)

Huh, thanks for the insight. I've never been able to get my head around weird division like this, and that sounds like a great rule of thumb for thinking about it.

[–] [email protected] 5 points 9 months ago* (last edited 9 months ago)

Dividing by a fraction is the same as flipping one it on its head and multiplying it.

0.25/0.5 is (1/4)/(1/2)

To multiply it we'd flip one, either works but for this example I decided to flip the second one: (1/4) * (2/1)

The top half of the fractions (numerators) multiply together, then the bottoms (denominators) multiply together. (1*2)/(4*1) = 2/4 which reduces to 1/2