Math
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Author:
pilismok
ID:
238914
Filename:
Math
Updated:
2013-10-05 22:44:33
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Difference
Minuend - Subtrahend =Dif-ce
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 div-le by 9
by 12
: sum of digits is div-le 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
^{}
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