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How do you write 4.20 as a fraction?

1 Answer

Mar 7, 2018

$4.20 = \frac{21}{5} = 4 \frac{1}{5}$ $4.20=color(blue)(21/5)=color(magenta)(4 1/5)$

Explanation:

$4.20$ $4.20$
$XXX = \frac{4.20}{1}$ $color(white)("XXX")=(4.20)/1$

$XXX = \frac{420}{100}$ $color(white)("XXX")=420/100$

$XXX = \frac{42}{10}$ $color(white)("XXX")=42/10$

$XXX = \frac{21}{5}$ $color(white)("XXX")=21/5$ (as an "improper fraction")
or
$XXX = 4 \frac{1}{5}$ $color(white)("XXX")=4 1/5$ (as a "mixed fraction")

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