It is rounding a decimal representation of a number so that there are two digits after the decimal point.
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move the decimal two places to the right.
Expressed as a decimal, rounded to two decimal places, sqrt(935) = ±30.58
Expressed as a decimal, rounded to two decimal places, sqrt(2002) = ±44.74
Expressed as a decimal, rounded to two decimal places, sqrt(705) = ±26.55.
To make a percentage a decimal, move the decimal point two places to the left, so 7.0% is .007 as a decimal.