Log inSign up for FREE
Library

Prime & Composite

Last updated 7 months ago
21 questions
1
A prime number is a number with exactly _______ factors.
1
A composite number is a number with more than _______ factors.
1
Factors are numbers that are __________ together.
1
Tell whether the number is prime or composite.

19 is a _______ number.

Type prime or composite.
1
Tell whether the number is prime or composite.

81 is a _______ number.

Type prime or composite.
1
Tell whether the number is prime or composite.

52 is a _______ number.

Type prime or composite.
6

Drag each number to either prime or composite.

  • 33
  • 51
  • 23
  • 27
  • 19
  • 43
  • Prime
  • Composite
7

Drag each number to either prime or composite.

  • 17
  • 63
  • 2
  • 4
  • 11
  • 9
  • 28
  • Prime
  • Composite
6

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

1

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

The number 24 is a ______________ number.

Spelling matters.

1

What is the smallest composite number?

1

What is the smallest prime number that is odd?

1

What is the only even prime number?

6

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

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

1

How many factors does the number 8 have?

4

Select all the numbers below that 24 is divisible by.

Use the divisibility rules sheet.

5

Select all the numbers below that 30 is divisible by.

Use the divisibility rules sheet.

2

Select all the numbers below that 63 is divisible by.

Use the divisibility rules sheet.

5

Select all the numbers below that 108 is divisible by.

Use the divisibility rules sheet.

7

Select all the numbers below that 180 is divisible by.

Use the divisibility rules sheet.

1

Select all the numbers below that 51 is divisible by.

Use the divisibility rules sheet.