Unit 1 ReviewNumber TheoryCreated by:Mrs. JaegerBridge Valley Elementary

Topics to Review Even and Odd Numbers Factors of a number Prime and Composite Numbers Exponential Notation Square Numbers Prime Factorization Arrays Divisibility Factor Capture Game

On your scratch paper, write the numbers that are even from the list below.

2, 5, 15, 6, 12, 98, 101, 222,249

Check your answers by clicking the mouse.

Secure Skill

On your scratch paper, write the numbers that are odd from the list below.

1, 6, 51, 787, 98, 561, 222, 249

Check your answers by clicking the mouse.

Secure Skill

Write all of the factors for the number 16. Check your notes if you need the definition for factor.

Secure Skill

1, 2, 4, 8, 16

Write all of the factors for the number 15. Check your notes if you need the definition for factor.

Secure Skill

1, 3, 5, 15

Name a number between 1 and 100 that is divisible by 3 but NOT 2

Secure Skill

An ODD number, whose digits are divisible by 3.Example: 93 93 = • 9 + 3 = 12• 12 divided by 3 = 4• 93 is divisible by 3 but NOT by 2

because it is an odd number.

Write if the following numbers are prime or composite. 2

______________________________________

4 _______________________________________

17 ______________________________________

24 ______________________________________

prime Factors: 1, 2

composite

Factors: 1, 2, 4

prime Factors: 1, 17

composite

Factors: 1, 2, 3, 4, 6, 8, 12, 24

Secure Skill

Remember: Prime has only 2 factors – 1 and itselfComposite has more than 2 factors

Complete the Divisibility Table below. Use your “tests” to help you determine which numbers are divisible by the give number.

Number Divisible by 2

Divisible by 3

Divisible by 6

Divisible by 5

230 yesEven

number

no2 + 3 + 0 = 55 divided by 3

= 1.666*sum has a remainder

noIt is NOT

divisible by both 2 and 3

yesEnds in a 0

Create 3 arrays for the number 10. Remember to label your array with a number model.

Secure Skill

Working with exponents. Identify the missing number.

62 = ____

22 = ____

52 = ____

___2 = 64

___2 = 16

___2 = 81

364

25

8

4

9

Developing Skill

16

8

4

2 2

2

2

Write the prime factorization for the number 16. Use a Factor Tree to help you.

Show using exponents: _____24

Beginning Skill

2 * 2 * 2 * 2 = 16

16

4

2 2

4

2 2

List the square numbers using the factors 1 – 10.

1491625

36496481100

Secure Skill

Questions?Be sure to ask Mrs. Jaeger in class.Keep working hard! This is very challenging material. You will do GREAT if you continue to work at it!