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, 2,377 hits)
Verbal expressions - difference (155.5 KiB, 1,621 hits)
Verbal expressions - product (145.3 KiB, 1,369 hits)
Verbal expressions - quotient (159.0 KiB, 1,761 hits)
Verbal expressions - square and cube (96.3 KiB, 1,973 hits)
Verbal expressions - equations (116.1 KiB, 1,666 hits)
Algebraic expressions - sum (161.8 KiB, 1,077 hits)
Algebraic expressions - difference (175.9 KiB, 941 hits)
Algebraic expressions - product (160.1 KiB, 1,040 hits)
Algebraic expressions - quotient (182.9 KiB, 1,028 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,244 hits)