TCAP
Jan 18, 2016
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!)
Positive – Negative Key
Negative Numbers
Press this key AFTER the number
Then CHECK display
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
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!!!!
Fraction Keys
Mixed Numbers
1 2/3
1 unit 2 / 3
Fractions
2/3
2 / 3
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
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)
Exponents
Square
22 = 4
122 = 144
32 = 9
Any exponent
53
Key:
5 yx 3 =
53 = 125
Know the difference!!
X2
X = -3
-3 x -3 = 9
-X2
The opposite of x2
X = -3
-3 x -3 = 9
opposite = -9
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
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
Similar Triangles
Find corresponding sides to write
your proportionthen solve!!
x
5
12
15
=
15 x = 60 x = 4
Probability
Number of Favorable Outcomes
Number of Total Possible Outcomes
Relationships of valuesDirectly
Proportion
Y x y = Kx
linear
Inversely Proportional
xy = kand y = k/x
nonlinear
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
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
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
YX
Just Remember
It’s not confusing!!
You know this.
Just make sense of the information given!