Sat math Essentials

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N U M B E R S A N D O P E R AT I O N S R E V I E W
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6 2
FRACTION
DECIMAL
PERCENTAGE
1
2
0.5
50%
1
4
0.25
25%
1
3
0.333 . . . 
33.3
%
2
3
0.666 . . . 
66.6
%
1
1
0
0.1
10%
1
8
0.125
12.5%
1
6
0.1666 . . . 
16.6
%
1
5
0.2
20%

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Practice Question 
If
2
7
5
< 
x
< 0.38, which of the following could be a value of
x?
a.
20%
b.
26%
c.
34%
d.
39%
e.
41%
Answer
c.
2
7
5
1
2
0
8
0
28%
0.38 
38%
Therefore, 28% < 
x
< 38%.
Only answer choice 
c
, 34%, is greater than 28% and less than 38%.
G r a p h s a n d Ta b l e s
The SAT includes questions that test your ability to analyze graphs and tables. Always read graphs and tables care-
fully before moving on to read the questions. Understanding the graph will help you process the information that
is presented in the question. Pay special attention to headings and units of measure in graphs and tables.
Circle Graphs or Pie Charts
This type of graph is representative of a whole and is usually divided into percentages. Each section of the chart
represents a portion of the whole. All the sections added together equal 100% of the whole.
Bar Graphs
Bar graphs compare similar things with different length bars representing different values. On the SAT, these graphs
frequently contain differently shaded bars used to represent different elements. Therefore, it is important to pay
attention to both the size and shading of the bars.
25%
40%
35%