Section 3.1 1

Section 3.1 2

Not what I had in mind.

Section 3.1 3

Section 3.1 4

Number X1 X2 X3 X4 X5 X6 X7

710

Section 3.1 5

100 would be divisible by 4,

but 102 doesn’t work.

Section 3.1 6

Prime and Composite NumbersA natural number that has exactly two different factors is called a prime number. The number 1 is not prime A natural number, other than 1,

that is not prime is composite.

Section 3.1 7

Every number has just one (unique) prime factorization.

Section 3.1 8

Homework:31 and 35 – you must justify how you got your answer (explain in words or show work)

37 and 43 – you must justify how you got your answer (explain in words or show work)

49, 53, 61, 63, 65, 73 – you must construct a factor tree, then answer by providing an equation. For example: 24 2 2 2 3