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Kindergarten Mathematics Children's Songs: The Rule of Integer Division
1. Divider is the division rule of one digit.

Integer division starts from the high order. One by one.

One is not enough to see two, except which business is which.

The remainder is less than the divisor, which is not enough for quotient one zero.

2. Divider is the division rule of two digits.

Integer division starts from the high order. Divide by two. Look at two.

Two is not enough to see three, except which business is which.

The remainder is less than the divisor, which is not enough for quotient one zero.

3. Multi-digit division rule

Integer division starts from the high order. Divide by a few and see how many there are.

This is not enough to see the next one, except which one is for business.

The remainder is less than the divisor, which is not enough for quotient one zero.

4. The nature of quotient invariance

Dividend and divisor are multiplied at the same time, and the multiplication factors should be the same.

Divider and divisor are divided by the same number.

Multiply everything except 0,

Remember the immutability of quotient.