Factors of Composite Numbers
This lesson is on factors of composite numbers. Students will write the factors of different numbers.
First, you will copy the worksheet I have included in this lesson. Then, you will explain what a factor is and show the students factors of a composite number before they do the worksheet.
A composite number has more than two factors.
Example: 18 is a composite number.
1 x 18 = 18
3 x 6 = 18
The factors of 18 = 1, 3, 6, and 18.
After you have gone over some examples of factors of composite numbers, then you can pass out the worksheet.
Worksheet: Factors of Composite Numbers.
Directions: Write the factors of each composite number.
1. 16 =
2. 24 =
3. 35 =
4. 42 =
5. 50 =
6. 100 =
7. 63 =
8. 45 =
9. 22 =
10. 21 =
11. 12 =
12. 32 =
13. 8 =
14. 54 =
15. 48 =
16. 72 =
17. 81 =
18. 36 =
19. 75 =
20. 49 =
Answers to Worksheet
1. 16 = 1, 2, 4, 8, 16
2. 24 = 1, 2, 4, 6, 12, 24
3. 35 = 1, 5, 7, 35
4. 42 = 1, 2, 6, 7, 21, 42
5. 50 = 1, 2, 25, 50
6. 100 = 1, 2, 4, 5, 10, 20, 25, 50, 100
7. 63 = 1, 7, 9, 63
8. 45 = 1, 5, 9, 45
9. 22 = 1, 11, 22
10. 21 = 1, 3, 7, 21
11. 12 = 1, 2, 3, 4, 6, 12
12. 32 = 1, 2, 4, 8, 16, 32
13. 8 = 1, 2, 4, 8
14. 54 = 1, 2, 6. 9, 27, 54
15. 48 = 1, 2, 3, 6, 8, 16, 24, 48
16. 72 = 1, 2, 8, 9, 36, 72
17. 81 = 1, 9, 81
18. 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36
19. 75 = 1, 3, 5, 15, 25, 75
20. 49 = 1, 7, 49
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
- Art
- Computer
- Games
- Geography
- Health
- History
- Language
- Literature
- Mathematics
- Music
- Other
- Physical Education
- Reading & Writing
- Science
- Social Studies
- Special Education
- SequencingThis lesson is about sequencing. I have provided a study sheet and worksheet for the students. This lesson is for the older preschoolers who are four and five. However, you can use this lesson for...
- Place Values - SubtractingThis lesson is about reading the problem and subtracting numbers in certain place...
- Shapes - Matching ExerciseStudents will match the words of shapes to the number of...
- Beginning Multiplication Worksheet - Part ThreeIn this lesson, students will have a worksheet of beginning multiplication problems. The problems are multiplying by fives and...
- Finding PatternsThis lesson is about patterns. Students will look at the patterns in the worksheet and write the following pattern. They will also tell how they determined the pattern. This lesson is for fourth...