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Difference
Minuend  Subtrahend =Difce

Quotient
Divisor/ Dividend = Quotient

Product
Factor x Factor = Product

Prime numbers (10)
2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Divisibility rules
 Divisible
 by 2: last digit is 0, 2, 4, 6, 8,
 by 3: sum of digits is divisible by 3
 by 5: 0, 5
 by 6: divisible by 3 and 2
 by 9: sum of digits is divle by 9
 by 12: sum of digits is divle by 3 and 4

Squares of first 10:
 10^(1)=0.1
 10^(2)=0.01
 5^2=25
 6^2=36
 7^2=49
 8^2=64
 9^2=81
 10^2=100

Cubes of (10):
 2^3=8
 3^3=27
 4^3=64
 5^3=125
 6^3=216
 7^3=343
 8^3=512
 9^3=729
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Root rules
 Radical = sq root
 Radicand = number under sq root
 sq root (A*B)= sq r(A) * sq r(B)
 sq root (A/B) = sq root (A) / sq root (B)

real numbers
rational numbers
integers
whole numbers
natural (counting)
 real numbers = all
 rational numbers = fractions
 integers = ,0,+
 whole numbers 0,+
 natural (counting) 1,2,3

GCF, LCM
 GCF = Greatest common factor, that divides evenly into 2 (or more) numbers:
 36 and 54 has following factors: 1, 2, 3, 6, 9, 18.
 18 is GCF of 36 and 54
 LCM = smallest number that two numbers divide evenly
 Multiples of 5 = 10, 15, 20, 25, 30
 Multiples of 15 = 30, 45, 60
 30 is LCM of 15 and 5

