Division is one of the four operations. Given the product of two factors and a non-zero factor, the operation of finding another factor is called division. Write c÷b, pronounced c divided by b (or b divided by c). Among them, c is called dividend, b is called divisor, and the result of a operation is called quotient.
Two meanings of multiplication:
(1) indicates: What is the sum of several?
(2) Indicate: What is the sum of several?
Law of division:
Remember that all items in the divisibility of numbers should be integers. But the divisor is not equal to 0, and the quotient is an integer with no remainder. When a÷b, it can be said that number B can be divisible by a, number A can be divisible by b, a is a multiple of number B, and b is a divisor of number A. If you ask for a divisor, you must remove the natural number, and if you ask for a multiple, you must multiply it by the natural number.
Bits divisible by 2, 5 and 3 are 0 and 5, and must be divisible by 5. The units are 2, 4, 6, 8 and 0, and they must be divisible by 2. If the sum of each number is a multiple of 3, it must be divisible by 3.