1, add up the same numbers and multiply them.

For example, five eights can be added continuously, and the multiplication 5×8=40 can be used.

2. Multiplication can be used to calculate multiples.

For example, how much is a square with an area of 4 square meters magnified by 8 times can be calculated by multiplying it by 4×8=32.

Second, division.

The product of two factors and one of them is known, and division is needed when the other factor is found.

For example: A×B=30, A=5, and what is B, then you can divide by 30÷5=6.

Extended data

The division formula dividend ÷ divisor = quotient, for example, 8÷2=4.

Dividend quotient = divisor, for example: 8÷4=2.

Quotient × Divider = Divider, for example: 2×4=8.

There is another situation:

Dividend splitter = quotient ... (six points) remainder (not greater than divisor).

Divider × quotient+remainder = dividend.

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