For example: 3-2= 1, read: the difference between 3 and 2 is 1.
Mathematics (Mathematics or maths, from the Greek word "Má thē ma"; Often abbreviated as "mathematics"), it is a discipline that studies concepts such as quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.
Other mathematical operations:
Multiply:
An integer can be divisible by another integer, which is a multiple of another integer. For example, 15 can be divisible by 3 or 5, so 15 is a multiple of 3 and 5.
(2) The quotient obtained by dividing one number by another. For example, a÷b=c, that is, A is a multiple of B, for example, A÷B=C, it can be said that A is C times that of B.
A number has countless multiples, that is, the set of multiples of a number is infinite. Note: you can't call a number a multiple alone, you can only say who is a multiple of who.