Section 4 1 math
Transcript of Section 4 1 math
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Section 4-1
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1. Objective: Write verbal phrases and sentences
as simple algebraic expressions and
equations.
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2.Expression: a combination of
variables, numbers, and at
least one operation.
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3. Equation: Same as an
expression but will have an equal sign.
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4. The word is means =.
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5. Addition words:PlusSum
More thanIncreased by
In all
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Examples:A number increased
by 3N + 3
Three more runs than the Pirates scored.
P + 3
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6. Subtraction words:Minus
DifferenceLess than
LessDecreased by
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Examples:Five dollars less than
Jennifer earned.D – 5
7 decreased by 27-2
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7. When the word than is in a phrase,
you write it backwards.
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The than family is dysfunctional –
Write backwards
The Than Family (Write it Backwards)
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8. Multiplication Words:Times
ProductMultiplied
Twice, Tripled, ect….Each
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Examples:Twice a number
2xThe product of 4 and
a number 4n
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9. Division words:Divided Quotient
Perseparate
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Emily’s age divided by 3
125 students separated into n classes.
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Fifteen increased by t
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Nine dollars less than j
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The product of r and 8
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Larry’s age divided by 3
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The sum of a number and four is -8
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The product of a number and five is -20
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Ten inches less than her height equals 26.
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Seven more than twice his age is 51.
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Two more than the number of cookies is 4.
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Ten times the number of students is 280.
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Five less than a number equals 31.
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Three more than twice a number is 15.