What is 0.4 divided by 0.008?

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Answer 1 · 2016-03-16T11:17:51

$0.4-:0.008= 50$

Given: $" "0.4-:0.008$

Write as $" "color(blue)(0.4/0.008)$

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To get rid of the decimals multiply by 1 but in the form of

$" "1=color(brown)(1000/1000)$ giving
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

$" "color(blue)((0.4color(brown)(xx1000))/(0.008color(brown)(xx1000)))color(green)( = 400/8)$

Lets split (partition) the number to make it easier to work out in our heads

400 can be slit (partitioned) into $10xx40$

So we can rewrite $color(green)(400/8)$ as

$" "color(green)( 10 xx 40/8)$

But $5xx8 =40" that is: "40-:8=5$ so we end up with

$" " color(blue)(color(green)(10 xx5) = 50)$