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, 3,527 hits)
Verbal expressions - difference (155.5 KiB, 2,076 hits)
Verbal expressions - product (145.3 KiB, 1,856 hits)
Verbal expressions - quotient (159.0 KiB, 2,334 hits)
Verbal expressions - square and cube (96.3 KiB, 2,586 hits)
Verbal expressions - equations (116.1 KiB, 2,191 hits)
Algebraic expressions - sum (161.8 KiB, 1,401 hits)
Algebraic expressions - difference (175.9 KiB, 1,204 hits)
Algebraic expressions - product (160.1 KiB, 1,362 hits)
Algebraic expressions - quotient (182.9 KiB, 1,413 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,579 hits)