An expression is a term in mathematics that describes a group of variables, numbers and operators. Operators include division, multiplication, addition and subtraction. Variables in expression are usually denoted as x and y, but it can be and other symbol.
The expressions can be written as verbal phrase or algebraic expression. Here are some examples of algebraic expressions:
1. $\ x + 3$
3. $\ 21 − x$
4. $\ 8 – 2$
This algebraic expressions can be also written in verbal phrase:
1. A number x increased by 3.
2. A fourth of a number y.
3. 21 decreased by a number x.
4. 8 decreased by 2.
Note that an expression doesn’t need to include a variable to be an expression. Expressions are used to define equations. Two expressions that are equal represent an equation. Try to solve some examples.
Verbal phrases in algebraic expressions worksheets
Verbal expressions - sum (146.5 KiB, 3,630 hits)
Verbal expressions - difference (155.5 KiB, 2,125 hits)
Verbal expressions - product (145.3 KiB, 1,901 hits)
Verbal expressions - quotient (159.0 KiB, 2,383 hits)
Verbal expressions - square and cube (96.3 KiB, 2,618 hits)
Verbal expressions - equations (116.1 KiB, 2,239 hits)
Algebraic expressions - sum (161.8 KiB, 1,438 hits)
Algebraic expressions - difference (175.9 KiB, 1,240 hits)
Algebraic expressions - product (160.1 KiB, 1,395 hits)
Algebraic expressions - quotient (182.9 KiB, 1,456 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,607 hits)