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Integers
LTL Test 7.2
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Terms in this set (36)
opposites
numbers that are the same distance from 0 on the number line; they have the same absolute value
integer
any number in the set of whole numbers & their opposites
Ex: (...-3, -2, -1, 0, 1, 2, 3 ...)
absolute value
a number's distance from zero on a number line; always positive
Ex: l-7l = 7
positive + positive =
positive
TEAMWORK
negative + negative =
negative
TEAMWORK
debt + debt = debt
positive + negative =
the sign of the number with the greater absolute value
GLADIATOR FIGHT
negative + positive =
the sign of the number with the greater absolute value
GLADIATOR FIGHT
subtracting integers
BLEEP BLEEP or SLASH-n-DASH
*add the opposite of the second integer & then follow addition of integers rules
positive times positive =
positive
negative times negative =
positive
CAMPING
positive times negative =
negative
CAMPING
-8 - (-9) =
-8 + (+9) = +1
BATTLE
-6 - 10 =
-6 + (-10) = -16
TEAMWORK
debt + debt = debt
prime number
a whole number that has exactly two factors: 1 & itself
composite number
a whole number that has more than 2 factors
zero
is its own opposite;
neither prime nor composite
one
neither prime nor composite because it has only ONE factor
prime factorization
expressing a composite number as the product of its prime factors
greatest common factor (GCF)
the greatest whole number that divides evenly into (is a factor of) two or more numbers
multiple
the product of a number & a nonzero whole number
least common multiple (LCM)
the least nonzero number that is a multiple of two or more numbers
equivalent fractions
fractions that name the same (equal)amount or part
Ex: 1/2 & 3/6
improper fraction
a fraction in which the numerator is greater than or equal to the denominator
Ex: 7/4
mixed number
a number made up of a non-zero whole number & a fraction
terminating decimal
a decimal number that ends (it TERMINATES)
Ex: 6.75
repeating decimal
a decimal in which one or more digits repeat infinitely Ex: 2.3333333333 . . .
rational number
any number that can be expressed as a ratio of two integers
Ex: 5 = 5/1; 0.75 = 3/4; 1.25 = 5/4
irrational number
a number whose decimal form is nonterminating & nonrepeating.
Ex: pi, square root of 5
counting (natural) numbers
1, 2, 3, 4, 5 . . .
whole number
0, 1, 2, 3 . . .
integer
. . . -3, -2, -1, 0, 1, 2, 3 . . .
first 10 prime numbers
2, 3, 5, 7, 11, 13, 17, 19, 23, 29
11th through 15th prime numbers
31, 37, 41, 43, 47
positive divided by positive
positive
negative divided by negative
positive
CAMPING
negative divided by positive
negative
CAMPING
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