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Prime and Composite Numbers:
 Prime – number that has only 2 factors
EX: 13
factors are 1 and 13
1 and itself
 composite – number that has more than 2 factors
EX: 24
factors are 1, 2, 3, 4, 6, 8, 12, 24
infinite factors
 0 and 1 are neither prime nor composite
only 1 factor
Venn Diagram:
 be able to fill in a Venn diagram
 know the different regions(areas) of a Venn diagram
Prime Factorization:
 factor tree
EX:
48
6
8
2 32 4
repeated division
3 48
2 16
2 8
2 4
2
2 2
Prime Factorization = 24 x 3
 There is only 1 prime factorization for any whole number
greater than 1.
Rectangular Models:
 know how to make a model for a given number
EX: 16
1 x 16
4 x 4 = 42
2x8
Least Common Multiple: LCM
 know how to find the LCM of pair of numbers
List the multiples:
EX: 12 and 15
12: 12, 24, 36, 48, 60
15: 15, 30, 45, 60
Venn Diagram:
EX: 12 and 15
Multiples of 12
12
24
36
48
Multiples of 15
60
15
30
45
LCM = 60
Prime Factorization in Exponential Form:
EX: 12
22 x 3
15
3x5
Use the highest power of each factor: 22 x3 x 5 = 60
LCM= 60
Greatest Common Factor: GCF
 know how to find the GCF of a pair of numbers
List the factors
EX: 12 and 15
12) 1, 2, 3, 4, 6, 12
15) 1, 3, 5, 15
GCF = 3
Venn Diagram:
Factors of 12
2
4
6
12
Factors of 15
1
3
5
15
GCF = 3
Using Prime Factorization:
EX: 12 = 2 x 2 x 3
15 =
3 x5
Find the factors they have
in common GCF = 3
Order of Operation:
P.
( ) parentheses
E.
32 exponents
M. D.
multiplication
OR
division
(left to right)
EX: 24 – 6 x 3 + 12 Order of operation
A. S.
addition
OR
subtraction
(left to right)
x, -, +
Factors and Multiples:
 know how to find the factors of a number
EX: 24: 1, 2, 3, 4, 6, 8, 12, 24 (all the #’s that are divisors of
24)
 know how to find the multiples of a number (repeated addition)
EX: 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88 …
Review all quizzes,
mini-quizzes, classwork, and notes