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, 4,708 hits)
Verbal expressions - difference (155.5 KiB, 2,589 hits)
Verbal expressions - product (145.3 KiB, 2,387 hits)
Verbal expressions - quotient (159.0 KiB, 2,928 hits)
Verbal expressions - square and cube (96.3 KiB, 2,953 hits)
Verbal expressions - equations (116.1 KiB, 2,676 hits)
Algebraic expressions - sum (161.8 KiB, 1,698 hits)
Algebraic expressions - difference (175.9 KiB, 1,472 hits)
Algebraic expressions - product (160.1 KiB, 1,628 hits)
Algebraic expressions - quotient (182.9 KiB, 1,781 hits)
Algebraic expressions - square and cube (151.5 KiB, 1,875 hits)