Chapter 4

Prime Factorization

100

What is the Prime Factorization of 54? use a factor tree to help you.

What is 2 x 3 x 3 x 3

200

Tell whether the number is prime or composite. 48, 57, 17, & 34

What is 1. composite 2. composite 3. prime 4. composite

300

what are all the factors of 80?

What is 80-1,2,4,5,8,10,16,20,40,80

400

Find the mean, median, mode, and range of the data. 20,12,9,5,2,and 25.

What is Mean-12.166666 Median-10.5 Mode-0 Range-23

500

Whats the Prime Factorization for 612?

What is 612= 3 x 2 x 3 x 2 x 17

GCF

100

Whats the GCF of 12 and 18?

GCF= 3 x 2= 6

200

Whats the GCF of 15 and 51?

GCF= 3

300

Whats the GCF of 26 and 55?

GCF= 1

400

Whats the GCF of 64, 40, and 56?

GCF= 2 x 2 x 2

500

Whats the GCF of 180 and 126? Using Prime Factorization.

GCF= 2 x 3 x 3= 18

Equivalent Fractions

100

Is 1/4 and 2/8 equivalent fractions? Explain your answer.

Yes. 

1) Because they have the same simplest form

2) Because when you cross multiply, you get the same value

200

Write 45/81 in simplest form.

5/9

300

Write two fractions that equal to 6/10.

3/5, 12/20, 18/30, 24/40, 30/50, 36/60 ect......

400

Describe and correct the error in simplifying 42/63.  GCF = 7, so 42 divided 7 = 6. 63 divided by 7 = 9.  Simplest form = 6/9.

6/9 is not the simplest form. Still has a GCF of 3. Simplest form is 2/3.

500

Write the fraction in simplest form. 132/156

11/13

LCM

100

Find the LCM by listing the multiples of 6 and 8.

6: 6, 12, 18, 24, 30, 36, 42 8: 8, 16, 24, 32, 40, 48, 56, 64 answer: 24

200

Find the LCM of 4 and 18 by using prime factorization.

LCM= 36

300

Find the LCM of 60 and 20 by using prime factorization.

LCM=2 x 2 x 5 x 3= 60

400

Find the LCM of 88, 77, and 66 by doing prime factorization.

LCM=11 x 2 x 2 x 2 x 3 x 7= 1,848

500

Find the LCM of 84 and 360 by doing prime factorization.

LCM=2 x 2 x 2 x 3 x 3 x 5 x 7= 2520

Vocabulary

100

Definition of Factor?

What is a number that divides into another number with no remainder.

200

Definition of Prime Number?

A number that has only two factors, One and Itself.

300

Definition of a Composite number?

What is a number that has more then 2 factors.

400

What is the definition of Relatively Prime?

What is two or more numbers GCF = 1.

500

What is another name for LCM? (hint: used when we add and subtract fractions)

What is Common Denominator.