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Math Flashcards - Generalist.txt
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1 kilometer = _____ meters
1000
1 meter = ____ centimeters
100
1 centimeter = ____ millimeters
10
1 mile = ____ yards
1760
1 mile = ____ feet
5280
1 yard = ____ feet
3
1 foot = ____ inches
12
1 gallon = ____ quarts
4
1 gallon = ____ fluid ounces
128
1 quart = ____ pints
2
1 pint = ____ cups
2
1 cup = ____ fluid ounces
8
1 ton = ____ pounds
2000
1 pound = ____ ounces
16
Perimeter of a square
4s
Perimeter of a rectangle
2l+2w or 2(l+w)
Circumference of a Circle
C=2πr or C=πd
Area of a Square
A=s
^{2}
Area of a Rectagle
A=lw or A=bh
Area of a Triangle
A=1/2bh or A=bh/2
Area of a Trapezoid
A= 1/2 (b
_{1}
+b
_{2}
)h or A=((b
_{1}
+b
_{2}
)h)/2
Area of Circle
A = πr
^{2}
Volume of a Cube
V=s
^{3}
Volume of a Rectangular Prism
V=lwh
Pi
π=3.14 or π=22/7
Operation: + addition
Solution: Sum
Operation: - subtraction
Solution: difference
Operation: x multiplication
Solution: product
Operation: divide
Solution: quotient
Order of Operations
PEMDAS
A number is divisible by 2 if . . .
It is an even number
A number is divisible by 3 if . . .
The sum of its digits is divisible by 3
A number is divisible by 4 if . . .
The last 2 digits are divisible by 4
A number is divisible by 5 if . . .
The last digit is 5 or 0
A number is divisible by 6 if . . .
It is divisible by both 2 and 3
A number is divisible by 8 if . . .
The last 3 digits are divisible by 8
A number is divisible by 9 if . . .
The sum of its digits is divisible by 9
A number is divisible by 10 if . . .
The last digit is 0
Prime number
A number with only 2 factors—1 and itself
Composite number
A number with more than 2 factors
Greatest Common Factor (GCF)
The largest factor that divides into 2 numbers
Least Common Multiple (LCM)
The smallest number (not 0) that 2 numbers will divide into evenly
Percent Ratios
Problem - z is what % of y?
Solve using:
=
So,
=
What is 60% of 90?
Decimal to Fraction
the number after the decimal is the numerator; place value is the denominator
Change .15 to a fraction
.15 =
Fraction to Percent
change fraction to decimal; use rules to change decimal to percent
= ____%
= 5/3.0 = .6 = 60%
Fraction to Decimal
(divide)
= 0.___
4/1.00=.25
Decimal to Percent
multiply by 100; decimal moves 2 places to the right; label percent
.007 = ____%
.007 = .7%
Percent to Decimal
divide by 100; decimal moves 2 places to the left; drop percent sign
8.5% = ___
8.5% = .085
Percent to Fraction
then reduce
35% = ______
freezing point of water
32
^{o}
F
__
^{o}
C
0
Temperature
Celcius to Fahrenheit
Temperature
Fahrenheit to Celcius
Commutative Property
(the numbers switch positions)
Addition
Commutative Property
(the numbers switch positions)
Multiplication
Associative Property
(the parentheses change positions)
Addition
Associative Property
(the parentheses change postions)
Multiplication
Inverse Property
(addition uses the opposite, multiplication uses the reciprocal)
Addition
Inverse Property
(addition uses the opposite, multiplication uses the reciprocal)
Multiplication
when
a
does not equal 0
Distributive Property
(always involves 2 operations)
Cross Product Property - Cross Multiplication
(use to prove 2 ratios are in proportion)
is equivalent to
Author
kcooper
ID
163114
Card Set
Math Flashcards - Generalist.txt
Description
Math Content Flashcards for the TeXes Generalist
Updated
2012-08-01T20:26:04Z
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