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dividend ÷ divisor = quotient
GCF greatest common factor
the greatest number that will divide evenly into the two numbers list factors of each then chose the highest one
LCM least common multiple
the least product that is a multiple of each of the counting numbers....factor each a build a product consisting of each factor the most number of times it appears as a factor in any one of the counting numbers in the set. e.g...24=2∗2∗2∗3 36=2∗2∗3∗3 so LCM (24,36) = 2∗2∗2∗3∗3 =72
all numbers that can be written as positive or negative fractions ...rational numbers can be expressed as fractions, decimals, or percents
to make an equivalent decimal number slide decimal two places to the left and drop the percent sign e.g....75% = .75
irrational square roots
irrational square roots do not have a number that they are evenly multiplied by...if given an irrational square root to estimate find the 2 numbers it falls between e.g. square root of 41 is between 6 and 7
rational square roots
nonnegative number that multiplies by itself to get the number e.g...square root of 1=1, square root of 25 is 5
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