what is variable and what is word or expression
Answers
A variable is an unknown value. An expression is a way of expressing a concept using an unknown value (variable).
☆ Variables ☆
• A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters x, y, and z are common generic symbols used for variables.
☆ Expression ☆
• An expression is a set of terms combined using the operations +, – , x or , for example. 4 x − 3 or x 2 – x y + 17 . An equation states that two expressions are equal in value, for example. 4 b − 2 = 6 . An identity is a statement that is true no matter what values are chosen.
☆ Word ☆
• Word form is writing the numerical/number as you would say it in words. Math Games for Kids. Multiplication Games.
• The definition of a word is a letter or group of letters that has meaning when spoken or written. ... The definition of a word is a letter or group of letters that has meaning when spoken or written. An example of a word is dog. An example of words are the seventeen sets of letters that are written to form this sentence.