How do you simplify #6.4\div ( - 0.08) #?

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Answer 1 · 2016-10-21T10:29:43

#80#

#6.4 div(-0.08)#

There are two issues going on here ...

A positive number divided by a negative value will give a negative.

We can change division by a decimal into division by a whole number by using powers of 10.

Write the divide as a fraction. It is easier to do and understand the process with fractions.

#6.4/0.08 xx 100/100 = (640.)/(8.)" "larr xx100/100 =xx 1# no harm done there.

Each decimal point moves 2 places to the right.

Now divide as usual:

#640/8 = 640 div 8 = 80#