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, 3,402 hits)
Verbal expressions - difference (155.5 KiB, 2,022 hits)
Verbal expressions - product (145.3 KiB, 1,807 hits)
Verbal expressions - quotient (159.0 KiB, 2,283 hits)
Verbal expressions - square and cube (96.3 KiB, 2,539 hits)
Verbal expressions - equations (116.1 KiB, 2,119 hits)
Algebraic expressions - sum (161.8 KiB, 1,360 hits)
Algebraic expressions - difference (175.9 KiB, 1,166 hits)
Algebraic expressions - product (160.1 KiB, 1,326 hits)
Algebraic expressions - quotient (182.9 KiB, 1,371 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,542 hits)