Usage patterns
小数点以下〈数〉桁to (a certain number of) digits after the decimal point
We calculated pi to 100 digits after the decimal point.
小数点第〈数〉位the nth decimal place
Give the answer to two decimal places.
小数点以下を四捨五入するto round off the digits after the decimal point
Please round off the result after the decimal point.
小数点を打つto place a decimal point (between digits)
Put a decimal point between 3 and 14 to write 3.14.