Factor Rainbow Fun!
Explore prime and composite numbers by finding all factors and creating factor rainbows for various numbers.
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Factor Rainbow Fun!
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Welcome to Factor Rainbow Fun! In this worksheet, you will practice finding all the factors of a number and arranging them into a 'factor rainbow'. A factor rainbow helps you see all the factor pairs that multiply to give you the original number. Remember, factors are numbers you multiply together to get another number. Let's get started!
What are factors?
1. Factors are numbers that divide another number exactly, without leaving a remainder. For example, the factors of 6 are 1, 2, 3, and 6 because 1x6=6 and 2x3=6.
2. Every number has at least two factors: 1 and itself.
1. When you multiply two numbers together, the numbers you are multiplying are called .
2. The of a number are all the numbers that can divide it evenly.
3. The number 1 is a factor of number.
List all the factors for each number below:
4. Factors of 12:
5. Factors of 18:
6. Factors of 20:
Draw a factor rainbow for each number. List the factors below the rainbow.
Example: Factor Rainbow for 10
Factors of 10: 1, 2, 5, 10
7. Factor Rainbow for 16:
Factors of 16:
8. Factor Rainbow for 24:
Factors of 24:
9. Which number has only 1, 2, 4, and 8 as its factors?
12
16
8
24
10. What is a factor pair for the number 30?
2 and 10
3 and 5
5 and 6
4 and 8
11. The number 7 has only two factors: 1 and 7.
True
False
12. The number 9 has factors 1, 3, and 9.
True
False