2、738 ÷ 4 1 = 18

3、990 ÷ 45 = 22

4、448 ÷ 32 = 14

5、646 ÷ 38 = 17

6、780 ÷ 15 = 52

7、500 ÷ 10 = 50

8、858 ÷ 22 = 39

9、 140 ÷ 14 = 10

10、528 ÷ 24 = 22?

1 1、480 ÷ 48 = 10?

12、798 ÷ 42 = 19?

13、405 ÷ 27 = 15?

14、660 ÷ 30 = 22?

15、405 ÷ 27 = 15?

16、700 ÷ 10 = 70?

17、880 ÷ 16 = 55?

18、989 ÷ 23 = 43?

19、620 ÷ 10 = 62?

20、89 1 ÷ 33 = 27?

2 1、90 1 ÷ 53 = 17

Extended data

Properties of division operation

1. If a number is divided by (or multiplied by) a number and then multiplied by (or divided by) the same number, the number remains the same. For example: 68÷ 17× 17=68 (or 68× 17÷ 17=68).

2. A number divided by the product of several numbers can be divided by the factors in the product in turn. For example: 320÷(2×5×8)=320÷2÷5÷8=4.

3. The quotient of a number divided by two numbers is equal to the number divided by the dividend in the quotient, and then multiplied by the divisor in the quotient. For example: 56÷(8÷4)=56÷8×4=28.

If the product of several numbers is divided by a number, any factor in the product can be divided by this number and then multiplied by other factors. For example: 8×72×4÷9 = 72÷9×8×4 = 256.

When the sum of several numbers is divided by a number, you can divide each addend by this number first, and then add each quotient. For example: (24+32+16) ÷ 4 = 24 ÷ 4+32 ÷ 4+16 ÷ 4 =18.

6. If the difference between two numbers is divided by a number, the quotient obtained by dividing the minuend by this number can be subtracted from the quotient obtained by dividing the minuend by this number. Example: (65-39) ÷13 = 65 ÷13-39 ÷13 = 2.

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