Two decimal places divided by two decimal places? At the same time, the decimal point is removed and divided by the integer. Then there is the ordinary division. Let's see if the dividend of a two-digit number can be completely divided, not just the dividend of a three-digit number.

When calculating a decimal divided by a decimal, we usually move the decimal point according to the number of decimal places of the divisor, for example, calculating 12.5? At 0.25, because the divisor has two decimal places, when we calculate vertically, we move the decimal points of the dividend and the divisor to the right by two places at the same time, and it becomes 1250? 25 is used for calculation.

Decimal multiplication and division algorithm

1, decimal multiplication calculation rules:

First, calculate the product according to the calculation rules of integer multiplication, and then look at the factor * * *, how many decimal places there are, just count a few from the right side of the product and point to the decimal point; If the number of digits is not enough, use "0" to make it up.

2, decimal division calculation rules:

First, move the decimal point of the divisor to make it an integer, then move the decimal point of the divisor to the right by several digits (if there are not enough digits, add "0"), and then calculate according to the division rule that the divisor is an integer.