Find two composite numbers with a GCF of 1
1
Using Prime Factorization to find the GCF and the LCM
a. 100 = 2 x 2 x 5 x 5
120 = 2 x 2 x 2 x 3 x 5 GCF =
b.
LCM =
27 = 54 =
GCF =
LCM =
c.
48 =
54 =
GCF =
LCM =
d. 75 = 150 = GCF = LCM = 2
Use Prime Factorization to find the GCF and LCM of 42 and 63
3
Use Prime Factorization to find the GCF and LCM of 140 and 168.
4
Base ­ a number that is multiplied repeatedly Exponent ­ tells how many times a number is used as a factor
Exponent
3
4
= three to the fourth power = 3 x 3 x 3 x 3 = 81
Base
5
Exponents 3 3 3 3 3 3 3 3 =
a a a a a =
26 =
33 =
54 =
19 =
1371= 120 =
13510=
102 = 105 = 1 to any power equals 1
any number to the 0 power equals 1
10 to any power has as many 0's as the power.
103 = 1,000 (Three 0's)
6
Guess the exponent!
1) 2a = 16
a = 2)
2x = 64
x =
3)
10n = 1,000
n =
4) 10x = 10,000,000
5) 5a = 125
x = a =
7