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, 3,806 hits)
Verbal expressions - difference (155.5 KiB, 2,197 hits)
Verbal expressions - product (145.3 KiB, 1,989 hits)
Verbal expressions - quotient (159.0 KiB, 2,465 hits)
Verbal expressions - square and cube (96.3 KiB, 2,681 hits)
Verbal expressions - equations (116.1 KiB, 2,307 hits)
Algebraic expressions - sum (161.8 KiB, 1,492 hits)
Algebraic expressions - difference (175.9 KiB, 1,287 hits)
Algebraic expressions - product (160.1 KiB, 1,455 hits)
Algebraic expressions - quotient (182.9 KiB, 1,518 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,659 hits)