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Carefully read each question
Read the entire question and all the answer choices
Underline or circle key words….NOT
DO the work…
…draw pictures…write the problem
DON’T just do it on a calculator
DO all calculations twice (remember the calculator only does what you put in it!)
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Positive – Negative Key
Negative Numbers
Press this key AFTER the number
Then CHECK display
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Tricky ExpressionsEvaluate –(-ab)3 when a = -2 and b = -1
Insert values for varibles, then simplify a b -1 (-1 x (-2) x (-1))3
-1 ( 2 x (-1) )3
-1 (-2) 3
-1 x 8 -8
Follow order of operations
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Percent Key
Percent Key
Only use this key to make a percent number a decimal to use for computation
Percent Key
This key DOES NOT change a decimal into a percent!!!!
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Fraction Keys
Mixed Numbers
1 2/3
1 unit 2 / 3
Fractions
2/3
2 / 3
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Fraction Keys - Simplify
Simplify and =
Reduce proper fractions like:
2/414/2825/1000
A b/c
Changes improper fractions to mixed numbers
12/415/1199/54
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Lower extreme
Upperextreme
MedianLower
Quartile
UpperQuartil
e
10 20 30 40 50 60 70 80 90 100
25%25%25% 25%
Box and Whisker Plots
Interquartile Range (75-35=40)
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Exponents
Square
22 = 4
122 = 144
32 = 9
Any exponent
53
Key:
5 yx 3 =
53 = 125
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Know the difference!!
X2
X = -3
-3 x -3 = 9
-X2
The opposite of x2
X = -3
-3 x -3 = 9
opposite = -9
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Square Roots
49Key49 then
Some numbers are not PERFECT SQUARE so the square root will not be a whole number
24 = 4.89
Area = 49each side is 77 x 7 = 49
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Proportions
Look for words like:
RatioRate
Similar
15’ flagpole 28’ shadow
x tall tree__22” shadow=
15 x 22 = 28x 330 = 28x 330/28 = 28x/28
11.78 = x
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Similar Triangles
Find corresponding sides to write
your proportionthen solve!!
x
5
12
15
=
15 x = 60 x = 4
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Probability
Number of Favorable Outcomes
Number of Total Possible Outcomes
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Relationships of valuesDirectly
Proportion
Y x y = Kx
linear
Inversely Proportional
xy = kand y = k/x
nonlinear
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Function Check
Match type of relation with an equation.
Directly Proportional A. y = x2 + 3
Linear Equation B. y = x –1
Inversely Proportional C. 24 = xy
Nonlinear Equation D. y = -2x
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Function CheckDirectly Proportional;
Inversely ProportionalLinear,
Non-linear
x y
2 12
3 18
4 24
x y
2 12
3 8
4 6
x y
2 5
3 6
4 7
x y
2 4
3 9
4 16
A B C D
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Function Check
Match type of relation with an equation.
Directly Proportional; Inversely ProportionalLinear, Non-linear
A B C D
Not a straight line Straight line and passes through (0,0)
Straight line but doesn’t pass through (0,0)
Not a straight lineone value increases while the other decreases
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YX
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Just Remember
It’s not confusing!!
You know this.
Just make sense of the information given!
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