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How to calculate the simple method of mathematics 8.25×99 in the first volume of the fifth grade
8.25x99

= 8.25 times (100- 1)

=8.25x 100-8.25

=825-8.25

=8 16.75

Arithmetic of decimal multiplication:

1, first quadrature according to the law of integer multiplication.

2. See how many decimal places the multiplicand and multiplier * * * have. Just count the numbers from the right side of the product and point to the decimal point.

3. If there is a 0 after the decimal point, cross out the 0 after the decimal point according to the basic properties of the decimal point.