Finding Factors

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Grade Level
Middle School
Subject
Mathematics
Length of Time
1 hour
Description

In this lesson, students will find the factors of the numbers listed in the worksheet.

Goals

Students will learn:
About factors

Materials Needed

The worksheet I have included in this lesson
Pencils and erasers

Procedure

First, you will copy the worksheet so that each student will have a copy.

Then, you will explain about factors. Factors are numbers that you multiply together to get a product.

Here's an example: Factors of 24

12 x 2 = 24

6 x 4 = 24

1 x 24 = 24

3 x 8 = 24

Factors: 1, 2, 3, 4, 6, 8, 12, 24

After that, you will pass out the worksheets so the students can work on them independently.

Worksheet - Finding Factors

Directions: Find the factors of the following numbers. 1. 25 =

2. 75 =

3. 190 =

4. 145 =

5. 27 =

6. 523 =

7. 45 =

8. 55 =

9. 19 =

10. 49 =

11. 98 =

12. 100 =

13. 50 =

14. 48 =

15. 36 =

16. 65 =

17. 84 =

18. 72 =

19. 60 =

20. 125 =Answer Sheet

1. 25 = 1, 5, 25

2. 75 = 1, 3, 5, 15, 25, 75

3. 190 = 1, 2, 5, 10, 19, 38, 95, 190

4. 145 = 1, 5, 29, 145

5. 27 = 1, 3, 9, 27

6. 523 = 1, 523

7. 45 = 1, 3, 5, 9, 15, 45

8. 55 = 1, 5, 11, 55

9. 19 = 1, 19

10. 49 = 1, 7, 49

11. 98 = 1, 2, 49, 98

12. 100 = 1, 2, 4, 5, 10, 20, 25, 50, 100

13. 50 = 1, 2, 5, 10, 25, 50

14. 48 = 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

15. 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36

16. 65 = 1, 5, 13, 65

17. 84 = 1, 2, 3, 4, 6, 7, 12, 28, 42, 84

18. 72 = 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 72

19. 60 = 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

20. 125 = 1, 5, 25, 125



Grading

Each question is worth five points.

100 to 90 = A

89 to 80 = B

79 to 70 = C

69 to 60 = D

Below 60 = F



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