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, 4,136 hits)
Verbal expressions - difference (155.5 KiB, 2,339 hits)
Verbal expressions - product (145.3 KiB, 2,134 hits)
Verbal expressions - quotient (159.0 KiB, 2,650 hits)
Verbal expressions - square and cube (96.3 KiB, 2,809 hits)
Verbal expressions - equations (116.1 KiB, 2,450 hits)
Algebraic expressions - sum (161.8 KiB, 1,568 hits)
Algebraic expressions - difference (175.9 KiB, 1,359 hits)
Algebraic expressions - product (160.1 KiB, 1,533 hits)
Algebraic expressions - quotient (182.9 KiB, 1,592 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,756 hits)