Term
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Definition
| A variable is a lettter, such as a or b or y, that represents one or more numbers. |
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Term
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Definition
| An algebraic expression is an expression that includes one or more variables |
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Term
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Definition
| Substituting is when you replace a variable in an algrbraic expression with a number. |
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Term
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Definition
| To evaluate an algebraic expression, substitute a number for each variable and calculate. |
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Term
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Definition
Natural numbers are numbers used for counting:
1, 2, 3, and so on. |
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Term
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Definition
Whole numbers are the natural numbers and zero:
0, 1, 2, 3, and so on. |
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Term
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Definition
Rational numbers include fractions and improper fractions:
2/3, 6/3, 4/1.
These numbers include natural and whole numbers. |
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Term
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Definition
Grouping symbols indicate that the operations within them should be done first.
Parentheses and The fraction bar are grouping symbols. |
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