1.1 Variables and Expressions Goals • I can evaluate a variable expression. • I can write variable expressions from word phrases. • I can write a variable expression that models a real life situation. A.SSE.1.a Interpret parts of an expression such as terms, factors, and coefficients
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1.1 Variables and Expressions Goals I can evaluate a variable expression. I can write variable expressions from word phrases. I can write a variable expression.
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1.1 Variables and Expressions
Goals
• I can evaluate a variable expression.
• I can write variable expressions from word phrases.
• I can write a variable expression that models a real life situation.
A.SSE.1.a Interpret parts of an expression such as terms, factors, and coefficients
Section 1.1 – Variables and Expressions
Vocabulary:
• Variable- a letter or symbol that can be used for a value that can change.
Numerical expression – a mathematical phrase that contains only constants and/or operations and NO variables
• Constant – a number or value that does not change.
Algebraic expression – a mathematical phrase that may contain one or more variables, constants, and/or operations
We have to be able to “translate” words into expressions
What words indicate a particular operation?
Add Subtract SumPlus
More thanIncrease(d) by
PerimeterDeposit
GainGreater than
Up (flights of stairs)Total
MinusTake awayDifference
Reduce(d) byDecrease(d) by
WithdrawalLess than
Fewer (than)Loss of
We have to be able to “translate” words into expressions
What words indicate a particular operation?Multiply Divide