Variables and Expresions
Standard
7.P.3 Create and use symbolic expressions for linear relationships and relate them to verbal, tabular, and graphical representations.
Cluster
C14
Vocabulary
Variable- a letter that stand for a number.
Variable Expression-a mathematical phase that uses variables and numerals and operations symbols
Objective
To identify variables, numerical expressions and variable expressions
To write epressions for word phrases
Lesson
Identifying Expression
a.) 5-5 : Numerical Expression
b.) c-5 : Variable Expression
Writing Variable Expressions
| Word Phrases | Variable Expression |
| nine more than a number p | p +9 |
| 4 less than a number n | n - 4 |
| A number z times 3 | 3z or 3(z) |
| A number a divided by 12 | a-:- 12 or a/12 |
Common Translations
| total | + |
| more than | + |
| increased by | + |
| difference | - |
| fewer than | - |
| less than | - |
| decreased by | - |
| product | X |
| times | X |
| quotient | -:- |
| divided by | -:- |
