Math Formula Sheet - GED
2014 GED? Test Resources
Mathematics Formula Sheet & Explanation
The 2014 GED? Mathematical Reasoning test contains a formula sheet, which displays formulas
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are provided of formulas.
to
test-
Area of a:
square
A = s2
rectangle
A = lw
parallelogram
A = bh
triangle trapezoid circle
A = !! bh
A
=
! !
h(b1
+
b2)
A = r2
Perimeter of a:
square rectangle triangle Circumference of a circle
P = 4s P = 2l + 2w P = s1 + s2 + s3 C = 2r OR C = d; 3.14
Surface area and volume of a:
rectangular prism right prism cylinder pyramid cone sphere
Data
mean
median
Algebra
slope of a line
slope-intercept form of the equation of a line
point-slope form of the equation of a line
standard form of a quadratic equation
SA = 2lw + 2lh + 2wh
V = lwh
SA = ph + 2B
V = Bh
SA = 2rh + 2r2
V = r2h
SA = ! ps + B
!
V = ! Bh
!
SA = rs + r2
V = ! r2h
!
SA = 4r2
V = ! r3
!
(p = perimeter of base with area B; 3.14)
mean is equal to the total of the values of a data set, divided by the number of elements in the data set
median is the middle value in an odd number of ordered values of a data set, or the mean of the two middle values in an even number of ordered values in a data set
!
=
!! !!
- -
!! !!
y = mx + b
y ? y1 = m(x ? x1) y = ax2 + bx + c
quadratic formula Pythagorean theorem
-! ? !! - 4!"
!=
2!
a2 + b2 = c2
simple interest
distance formula total cost
I = Prt (I = interest, P = principal, r = rate, t = time) d = rt
total cost = (number of units) ? (price per unit)
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2014 GED? Test Resources
TI-30XS Calculator Reference Sheet
The calculator reference sheet is provided on most items on the 2014 GED? Mathematical Reasoning Mathematical Reasoning test, as well as certain items on the Scientific Reasoning and Social Studies tests. The calculator reference sheet is provided to test-takers in order to demonstrate the functionality of the onscreen calculator, specifically in terms of what order to click the buttons in complex problems, such as order of operations or calculating with fractions.
BASIC ARITHMETIC
To perform basic arithmetic, enter numbers and operation symbols using the standard order of operations.
EXAMPLE
8 4 7
The correct answer = -25
.
PERCENTAGES
To calculate with percentages, enter the number, then
.
EXAMPLE
40% 560
The correct answer = 224
.
To perform calculations with scientific notation, use the
EXAMPLE
7.8 108 1.5 108
key.
SCIENTIFIC NOTATION
.
To perform calculations with fractions, use the formatted in reduced form.
EXAMPLE
2 9
3 7
The correct answer = 630000000 key. The answer will automatically be
FRACTIONS
The correct answer =
.
MIXED NUMBERS
To perform calculations with mixed numbers, use
.
As with fractions, the answer will automatically be formatted in reduced form.
EXAMPLE
12
5 6
1
1 2
POWERS AND ROOTS
The correct answer =
.
To perform calculations with powers and roots, you will use the following keys:
EXAMPLE
1.22
EXAMPLE
74
EXAMPLE
529
EXAMPLE
31728
.
The correct answer = 1.44 The correct answer = 2401
The correct answer = 23 The correct answer = 12
The answer toggle key
can be used to toggle the display result between fraction and
decimal answers, exact square root and decimal, and exact pi and decimal.
EXAMPLE
9 10
The correct answer = 0.9
.
TOGGLE KEY
................
................
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