FTCE General Knowledge Math
operations addend+addend=sum
sum-addend=difference
factorXfactor=product
dividend ÷ divisor = quotient
division dividend
---------- = quotient
divisor
divide by zero any number ÷ 0 = can't do it
0 ÷ any number = 0
0 cannot be a divisor
prime number whole nu...
FTCE General Knowledge Math
operations ✔✔addend+addend=sum
sum-addend=difference
factorXfactor=product
dividend ÷ divisor = quotient
division ✔✔dividend
---------- = quotient
divisor
divide by zero ✔✔any number ÷ 0 = can't do it
0 ÷ any number = 0
0 cannot be a divisor
prime number ✔✔whole number greater than 1 that is divisible only by itself and 1
composite ✔✔whole number greater than 1 that are not prime
prime factors ✔✔use factor tree - e.g. 36 = 2∗2∗3∗3
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 smallest product that is a multiple of each of the counting
numbers....factor each/ build a product consisting of each factor used the most number of times it
appears as a factor. e.g...24=2∗2∗2∗3 36=2∗2∗3∗3 so LCM (24,36) = 2∗2∗2∗3∗3 =72
1 is neither prime or composite ✔✔...
, rational numbers ✔✔whole numbers, integers, positive and negative fractions, decimals, and percents
whole numbers ✔✔counting numbers and 0
integers ✔✔numbers that are either negative or positive and 0....o is not positive or negative
rational numbers ✔✔all numbers that can be written as positive or negative fractions ...rational
numbers can be expressed as fractions, decimals, or percents
80%=.80=.8= ✔✔4/5
60%=.60=.6= ✔✔3/5
40%=.40=.4= ✔✔2/5
20%=.20=.2= ✔✔1/5
87 1/2% = .875= ✔✔7/8
62 1/2 %=.625= ✔✔5/8
37 12%=.375= ✔✔3/8
12 1/2% = .125= ✔✔1/8
66 2/3%=.66 2/3 = ✔✔2/3
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