Factor Finder
Multiple Mission
Mission

Common-Multiple Comet
Mystery Number
Number

Galactic Grab Bag
100

Name all the factors of 10.

What are 1, 2, 5, and 10?

100

Give the first five positive multiples of 3.

What are 3, 6, 9, 12, and 15?

100

Name the smallest common multiple of 2 and 3.

What is 6?

100

I am a multiple of 5, greater than 20, and less than 30.

What is 25?

100

True or false: Every whole number is a factor of itself.

What is true?

200

What are 1, 2, 5, and 10?

What are 1, 2, 3, 6, 9, and 18?

200

Complete the sequence: 7, 14, 21, __, __, __.

What are 28, 35, and 42?

200

Name the first three positive common multiples of 4 and 6.

What are 12, 24, and 36?

200

I am a factor of 20, greater than 4, and less than 10.

What is 5?

200

True or false: Multiples stop after a number has been multiplied by 100.

What is false? Multiples continue forever.

300

Which number is not a factor of 24: 3, 4, 5, 6, or 8?

What is 5?

300

Is 56 a multiple of 8? Prove your answer with a multiplication fact.

What is yes, because 8 × 7 = 56?

300

 Is 40 a common multiple of 5 and 8? Explain.

What is yes, because 5 × 8 = 40 and 8 × 5 = 40?

300

I am a common multiple of 3 and 4, greater than 20, and less than 30.

What is 24?

300

Which statement is correct: “6 is a factor of 42” or “6 is a multiple of 42”?

What is “6 is a factor of 42,” because 6 × 7 = 42?

400

Name all the factor pairs of 36.

What are 1 and 36, 2 and 18, 3 and 12, 4 and 9, and 6 and 6?

400

Name every multiple of 9 greater than 30 and less than 70.

What are 36, 45, 54, and 63?

400

Find the least common multiple of 6 and 9.

What is 18?

400

I am less than 50, a multiple of 7, and a factor of 84. I am greater than 20.

What is 28, or 42?

400

A spaceship has 32 seats arranged in equal rows. Name three possible row arrangements.

What are 1 × 32, 2 × 16, 4 × 8, or the reversed arrangements? Any three valid arrangements earn credit.

500

 am a factor of 48, a multiple of 4, and greater than 8 but less than 20.

What is 12 or 16?

500

A rocket flashes every 12 seconds. At which five positive times will it first flash?

What are 12, 24, 36, 48, and 60 seconds?

500

Two satellites pass Earth every 8 minutes and every 12 minutes. If they pass together now, when will they next pass together?

What is 24 minutes?

500

I am the smallest number greater than 20 that is a multiple of 6, 8, and 12.

What is 24?

500

List all the common factors of 24 and 36. Then identify the greatest common factor

What are 1, 2, 3, 4, 6, and 12, with a greatest common factor of 12?