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[Week 12] - Prime & Composite

Last updated almost 4 years ago

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Watch the video lesson.  Then complete the assignment.

Question 1

1.

A prime number is a number with exactly _______ factors.

Question 2

2.

A composite number is a number with more than _______ factors.

Question 3

3.

Factors are numbers that are __________ together.

Question 4

4.

Tell whether the number is prime or composite.

19 is a _______ number.

Type prime or composite.

Question 5

5.

Tell whether the number is prime or composite.

81 is a _______ number.

Type prime or composite.

Question 6

6.

Tell whether the number is prime or composite.

52 is a _______ number.

Type prime or composite.

Question 7

7.

Drag each number to either prime or composite.

33
23
51
43
27

Question 8

8.

Drag each number to either prime or composite.

4
9
2
28

Question 9

9.

Question 10

10.

Use question 7 to determine if 24 is prime or composite.

The number 24 is a ______________ number.

Spelling matters.

Question 11

11.

What is the smallest composite number?

Question 12

12.

What is the smallest prime number that is odd?

Question 13

13.

What is the only even prime number?

Question 14

14.

Question 15

15.

How many factors does the number 8 have?

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

Question 21

21.

19

Prime

Composite

11

63

17

Prime

Composite

Make a factor chart for the number 12.  Then select all the factors of 12.

Select all the composite numbers from the list below.  Use your divisibility rules.

7, 21, 37, 44, 51, 63, 81, 82

Select all the numbers below that 24 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10

Select all the numbers below that 30 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10

Select all the numbers below that 63 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10

Select all the numbers below that 108 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10

Select all the numbers below that 180 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10

Select all the numbers below that 51 is divisible by.

Use the divisibility rules sheet.

2

3

4

5

6

9

10