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Third grade multiplication and division method
The mathematical multiplication and division formula in the second volume of the third grade is as follows:

Dividend = quotient. ?

Dividend quotient = divisor.

Quotient × frequency divider = frequency divider.

Multiplication and division of two digits and one digit includes remainder.

Multiply two digits by two digits.

The content of multiplication and division in grade three

Multiplication principle: Multiplication principle is the basic principle of multiplication operation, that is, when two numbers are multiplied, the product is equal to the sum of the multiplication of the numbers in their respective digits. For example, if 23 times 34, its product is 882, because 2 times 3 to get 6, 3 times 4 to get 12, and 6 and 12 add up to 18, so the product of 23 times 34 is 882.

Division principle: Division principle is the basic principle of division operation, that is, when two numbers are divided, the quotient is equal to the sum of the division of their digits. For example, if 45 is divided by 9, its quotient is 5, because 4 is divided by 9 to get 0.4444, 5 is divided by 9 to get 0.5555, and 0.4444 and 0.5555 add up to get 1, so the quotient of 45 divided by 9 is 5.

Multiplication table: Multiplication table is the basic tool of multiplication operation, which can help students quickly calculate the product of two one-digit numbers. In the multiplication table, each row and column represents a different number, and each square represents the product of these two numbers. For example, if you multiply 3 by 4, you only need to find the intersection of the row where 3 is located and the column where 4 is located, and you can get the product of 12.

Division table: Division table is the basic tool of division operation, which can help students quickly calculate the quotient of two one-digit numbers. In the division table, each row and column represents a different number, and each square represents the quotient of these two numbers. For example, if you divide 10 by 2, you only need to find the intersection of the row where 10 is located and the column where 2 is located, and you can get its quotient 5.