# IDENTIFY THE FACTORS OF WHOLE NUMBERS by malj

VIEWS: 5 PAGES: 3

• pg 1
Who:
3333
-5
7                                  Time: 20-30 minutes
6                         IV 3.3 Students will identify and represent
Why:
5  X                       factors of whole numbers. Factors are numbers
4
X                     that are multiplied to get a product. Factors of a
3  X
number will divide the number evenly.
2
 By learning factoring students will get a better
understanding of number relationships.
1
________________________________________________
K               How:
__
 Read the directions to the factor worksheet.
What:                      Read and work out the example factor problem.
 Then complete the rest of the factor worksheet.
 Last do the challenge problem if you have
All you need is a            grasped the concept of factors and want to work
pencil or pen                a harder problem.
and the factor
worksheet.

Where:
An extra activity would be to take a paper
X__ Outside                                   and writing utensil with you on a car ride.
What else:         Write down some of the numbers you see
X Inside
on cars, billboards, and signs. Then find
___ On-line                                    the factors of these random numbers. Can
___ On-site

_________

MCTM - SumMore Math                                                           2006
Factors are numbers that are multiplied to get a product. Factors of a number
will divide the number evenly. For example: Find the factors of 4: 1x4=4,
2x2=4 (the factors of 4 are 1, 2, and 4) because these are the numbers that
divide evenly into 4.

Problem: Find the factors of 32 by following the steps 1-4.
STEP 1
Every number has 1 and itself as factors.
 32 / 1 = 32 or 1 x 32 = 32, so 1 and 32 are factors of 32.

STEP 2
Find other factors by dividing by 2 then 3, and so on.
 32 / 2 = 16 or 2 x 16 = 32, so 2 is a factor of 32.
 3 does not divide evenly into 32, so 3 is not a factor of 32.
 32 / 4 = 8 or 4 x 8 = 32, so 4 is a factor of 32.

STEP 3
Continue to divide to find all the factors of 32.

STEP 4
List factors of 32
1, 2, ______, 8, _______, 32
List the factors of each number.
18                      22                   100
1, 2, 3, 6, 9,18           __________________       ________________

30                        72                  13
__________________ __________________ ________________
How do you know when you are done factoring? What is a shortcut
you could use to finding factors?

CHALLENGE: List the factors for 1,024 ______________________

MCTM - SumMore Math                                                          2006
MCTM - SumMore Math
2006

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