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, 2,893 hits)
Verbal expressions - difference (155.5 KiB, 1,807 hits)
Verbal expressions - product (145.3 KiB, 1,572 hits)
Verbal expressions - quotient (159.0 KiB, 2,033 hits)
Verbal expressions - square and cube (96.3 KiB, 2,318 hits)
Verbal expressions - equations (116.1 KiB, 1,873 hits)
Algebraic expressions - sum (161.8 KiB, 1,237 hits)
Algebraic expressions - difference (175.9 KiB, 1,058 hits)
Algebraic expressions - product (160.1 KiB, 1,193 hits)
Algebraic expressions - quotient (182.9 KiB, 1,213 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,402 hits)