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FTCE General Knowledge Math

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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...

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  • April 4, 2023
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  • 2022/2023
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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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