The flashcards below were created by user
kcooper
on FreezingBlue Flashcards.
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1 kilometer = _____ meters
1000
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1 meter = ____ centimeters
100
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1 centimeter = ____ millimeters
10
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1 gallon = ____ fluid ounces
128
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1 cup = ____ fluid ounces
8
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Perimeter of a rectangle
2l+2w or 2(l+w)
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Circumference of a Circle
C=2πr or C=πd
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Area of a Rectagle
A=lw or A=bh
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Area of a Triangle
A=1/2bh or A=bh/2
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Area of a Trapezoid
A= 1/2 (b1 +b2)h or A=((b1+b2)h)/2
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Volume of a Rectangular Prism
V=lwh
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Operation: + addition
Solution: Sum
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Operation: - subtraction
Solution: difference
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Operation: x multiplication
Solution: product
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Operation: divide
Solution: quotient
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Order of Operations
PEMDAS
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A number is divisible by 2 if . . .
It is an even number
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A number is divisible by 3 if . . .
The sum of its digits is divisible by 3
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A number is divisible by 4 if . . .
The last 2 digits are divisible by 4
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A number is divisible by 5 if . . .
The last digit is 5 or 0
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A number is divisible by 6 if . . .
It is divisible by both 2 and 3
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A number is divisible by 8 if . . .
The last 3 digits are divisible by 8
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A number is divisible by 9 if . . .
The sum of its digits is divisible by 9
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A number is divisible by 10 if . . .
The last digit is 0
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Prime number
A number with only 2 factors—1 and itself
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Composite number
A number with more than 2 factors
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Greatest Common Factor (GCF)
The largest factor that divides into 2 numbers
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Least Common Multiple (LCM)
The smallest number (not 0) that 2 numbers will divide into evenly
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Percent Ratios
Problem - z is what % of y?
Solve using:  = 
So,  = 
What is 60% of 90?
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Decimal to Fraction
the number after the decimal is the numerator; place value is the denominator
Change .15 to a fraction
.15 = 
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Fraction to Percent
change fraction to decimal; use rules to change decimal to percent
 = ____%
= 5/3.0 = .6 = 60%
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Fraction to Decimal
 (divide)
 = 0.___
4/1.00=.25
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Decimal to Percent
multiply by 100; decimal moves 2 places to the right; label percent
.007 = ____%
.007 = .7%
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Percent to Decimal
divide by 100; decimal moves 2 places to the left; drop percent sign
8.5% = ___
8.5% = .085
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Percent to Fraction
 then reduce
35% = ______
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freezing point of water
32oF
__oC
0
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Temperature
Celcius to Fahrenheit
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Temperature
Fahrenheit to Celcius
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Commutative Property
(the numbers switch positions)
Addition
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Commutative Property
(the numbers switch positions)
Multiplication
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Associative Property
(the parentheses change positions)
Addition
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Associative Property
(the parentheses change postions)
Multiplication
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Inverse Property
(addition uses the opposite, multiplication uses the reciprocal)
Addition
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Inverse Property
(addition uses the opposite, multiplication uses the reciprocal)
Multiplication
 when a does not equal 0
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Distributive Property
(always involves 2 operations)
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Cross Product Property - Cross Multiplication
(use to prove 2 ratios are in proportion)
 is equivalent to 
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