Unit 1 Review: Whole Number Properties

Factor Frenzy

100

Create a factor rainbow for 16.

1   2   4   8   16

200

List all the factors for the number 32.

1   2   4   8   16   32

300

What is the prime factorization for the number 42? (Hint: we can make a factor tree to find this!)

2 x 3 x 7

400

List all the factors for the number 64.

1   2   4   8   16   32   64

500

What is the prime factorization for 144?

2 x 2 x 2 x 2 x 3 x 3    OR    2⁴ x 3²

Exponential Knowledge

100

7²

49

200

9³

729

300

What is the square root of 169?

13

400

6⁴

1,296

500

What is the square root of 400? (we haven't done this one and that's okay :) try to use critical thinking!)

20

Divided by WHAT?

100

Is 9,500 divisible by 4? How do you know?

YES- ends in 00

200

Is 8,346 divisible by 6? How do you know?

YES- it's divisible by 2 bc it's even and divisible by 3 since the digits add to 21

300

Create a three digit number that's divisible by BOTH 5 and 3.

Answers vary

400

Of the factors 2, 3, 4, 5, 6, 9, 10

What is 5,084 divisible by?

2 and 4

500

Create a four-digit number that's divisible by BOTH 4 and 6.

Answers vary

Prime Information

100

Is 23 prime or composite?

Prime

200

Is 49 prime or composite?

composite (but, it is a special number...it's square!)

300

List two prime numbers between 1 and 10.

Answers may include 2, 3, 5, and 7

400

Is 56,439 prime or composite?

composite- we know it can be divided by 3 and 9 because the sum of the digits is 27!

500

Is 83 prime or composite?

prime (check with divisibility rules/a factor rainbow if you're not sure!)