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Math 9: Units 1-3
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Terms in this set (47)
product law (multiplication law)
add exponents
quotient law (division law)
subtract exponents
power of a power law
multiply exponents
expanded form
repeated multiplication
standard form
evaluated answer
distance
rate x time
rate
distance/time
time
distance/rate
exponents of zero
equals 1
make a negative exponent positive
take the inverse
Rational numbers
Integers, Fractions, terminating decimals, repeating pattern of decimals
Irrational numbers
Decimal never terminates
Divisible by 2
ends with 2,4,6,8,0
Divisible by 3
sum of digits is divisible by 3
Divisible by 4
last 2 digits are divisible by 4
Divisible by 5
ends with 0 or 5
Divisible by 6
if 2 and 3 are factors
Divisible by 9
sum of digits are divisible by 9
Divisible by 10
ends with 0
Prime numbers
only 1 and itself are factors
Perfect squares
have prime factors with an even number of terms.
Diameter
=2r
Radius
=d/2
Circumference
=πd or 2πr
Area
=πrr
Integers
positive & negative numbers, and zero
Absolute value
an integer's distance from 0 regardless of its direction.
Adding & Subtracting Integers of the same sign
Add integers and keep the same sign.
Adding & Subtracting Integers with different signs
Subtract integers and keep the sign of the largest integer.
Order of Operations
BEDMAS
Adding & Subtracting Fractions
Requires a common denominator
Division of Fractions
Invert the divisor and change operation to multiplication.
1/2
0.5
1/4
0.25
3/4
0.75
1/5
0.2
2/5
0.4
3/5
0.6
4/5
0.8
1/8
0.125
3/8
0.375
5/8
0.625
7/8
0.875
1/3
0.3 repeating
2/3
0.6 repeating
Rule of 9
repeating decimals are placed over a denominator of 9.
Zero Sum Property
solving 2 step equations
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