How do you convert 100 millimeters to meters?

100 mm = 0.1 m
Let ##x## represent the unknown count of metres
Known: 1000 millimetres (mm) = 1 metre (m)
Using the method of ratios:
##(“metres”)/(“millimetres”) -> (“m”)/(“mm”) = 1/1000##
So we need to solve for:
##(“m”)/(“mm”) = 1/1000 -= x/100##
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Note:
In ratio, for multiply or divide, what you do to the bottom you do to the top.
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We need to change 1000 into 100
##=>(“m”)/(“mm”) -= (1-:10)/(1000-:10) -= x/100##
##=>(“m”)/(“mm”)=0.1/100= x/100##