An expression is made up of numbers and variables joined by mathematical operations.
That type of sentence is called a mathematical expression.
You can make 24 numbers by rearranging the digits. However, you can make vastly more if you allow mathematical operations on the digits. For example, 3+5*8-6 = 37.
By simply re-ordering the digits, you can get 500 6-digit numbers, excluding those starting with 0. There are thousands more that can be made using mathematical operations such as addition, subtraction, multiplication, division, exponentiation, factorials and so on.
nadia made mathematical symbols
A term, expression, equation or identity.
Sentences made up of numbers; a mathematical equation is a number sentence. pie rocks
There are two meanings for the phrase "real number". 1,000,000 is a real number no matter which of them you use. (Numbers that are not "real numbers" are "imaginary" or "complex" numbers if you're using the phrase in one sense, and "made-up" numbers like "a jillion" in the other sense.)
A mathematical model is made up of mathematical equations and data
A mathematical model is made up of mathematical equations and data.