Rational number multiplication algorithm The rational number multiplication algorithm is the multiplication of two numbers, the same sign is positive, the different sign is negative, and the absolute value is multiplied. Multiply any number by 0, and the product is still 0. 2. Two numbers whose product is 1 are reciprocal. Multiply multiple rational numbers and multiply several numbers except 0. When the number of negative factors is even, the product is positive, and when the number of negative factors is odd, the product is negative.

Introduction to Rational Numbers Rational numbers are the collective names of integers (positive integer, 0, negative integer) and fractions, and they are the set of integers and fractions.

Integers can also be regarded as fractions with a denominator of one. Real numbers that are not rational numbers are called irrational numbers, that is, the fractional part of irrational numbers is infinite cyclic numbers. It is one of the important contents in the field of number and algebra, and it is widely used in real life. It is the basis for continuing to learn real numbers, algebraic expressions, equations, inequalities, rectangular coordinate systems, functions, statistics and other mathematical contents and related disciplines.

To put it bluntly, rational number and irrational number mean that the division of two numbers is not equal to your number, while irrational number means that the division of two numbers is not equal to this number. Then we divide natural numbers into decimals and fractions. What kind of books do they belong to?

X If he multiplies a two, or any number, he will definitely get another number, and that number is its multiple, and then divide this multiple by the number he multiplied to get X, so the natural number is a reasonable number.

Fraction is also a rational number, another fraction, and we all know that it can represent a division formula, which also meets the conditions of our rational number, so the fraction is also a rational number.

Any division of two numbers cannot be an infinite acyclic decimal. Even if you look like a number, its cycle segment will always appear in the end, so decimals can't be divided into rational numbers, but irrational ones.

The above are some information about irrational numbers and rational numbers for your reference.