2nd 9-Weeks Review

Topic: Multiples & Factors

Question: Find the first 5 multiples of 24.&List all of the factors of 24.

Answer: Multiples: 24, 48, 72, 96, 120

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

Topic: Prime Factorization

Question:Decompose 102 into its prime

factorization.

Answer: 102

2 51 2 ∙ 3 ∙ 17

3 17

Topic: Prime Factorization

Question:Decompose 72 into its prime

factorization using exponents.

Answer: 72

4 18 23 ∙ 32

2 2 2 9 3 3

Topic: GCF & LCM

Question:Find the Greatest Common Factor

of 36 & 84.

Answer: 3 36 84 4 12 28 GCF = 3 ∙ 4 = 12 3 7

Topic: GCF & LCM

Question:Find the Lowest Common Multiple of

24 & 18.

Answer: 2 24 18 3 12 9 LCM = 2 ∙ 3 ∙ 4 ∙ 3 = 72 4 3

Topic: Using GCF & LCM

Question:If hamburger buns come in packages of 8

and hamburger patties come in packages of 12. What is the least amount of hamburgers you can make buying whole packages of buns and patties?

Answer: 2 8 12 2 4 6 LCM = 2 ∙ 2 ∙ 2 ∙ 3

= 24 2 3 24 hamburgers

Topic: Equivalent Fractions

Question:Find the equivalent fraction.

2 = 18 5 ?

Answer:2 = 18

5 45

Topic: Mixed Numbers & Improper Fractions

Question:Change the mixed number to an improper fraction.

5 ¾

Answer:5 ¾ = 23 4

Topic: Decimals to Fractions

Question:Change the Decimal to a fraction.

0.88

Answer:0.88 = 88 = 44 = 22

100 50 25

Topic: Fractions to Decimals

Question:Change the fraction to a decimal.

1 9

Answer: 0.1119 1.000 0.1

-9 10 -9 1

Topic: Decimals to Percents

Question:If you have $0.61 what percent of a dollar do you have?

Answer:$0.61 = 61%

Topic: Percents to Decimals

Question:If you have 55% of a dollar, how much money is that?

Answer:55% = $0.55

Topic: Percents to Fractions

Question:Change the percent to a fraction.

40%

Answer:40% = 40 = 2

100 5

Topic: Fractions to Percents

Question:Change the fraction to a percent.

5 8

Answer:5 = ? 5 ∙ 100 = 8 ∙ ?

8 100 500 = 8 ∙ ? 8 8 62.5% = ?

Topic: Adding Fractions

Question:

Answer:5 + 3 = 8 2 + 1 = 3 = 1 1+8 = 9

3 3 3

Topic: Adding Fractions

Question:

Answer: 18 + 5 = 2330 30 30

Topic: Subtracting Fractions

Question:

Answer:32 - 21 = 1156 56 56

Topic: Subtracting Fractions

Question:

Answer:

3 9 1 16 2 33 1 16 1 17 24 - 24 = 24 - 24 = 24

Topic: Multiplying Fractions

Question:

Answer:30 = 15 = 548 24 8

Topic: Multiplying Fractions

Question:

Answer:

8 · 3 = 24 = 4 3 2 6

Topic: Dividing Fractions

Question:

Answer:

3 · 5 = 15 = 3 34 1 4 4

Topic: Dividing Fractions

Question:

Answer:17 · 12 = 204 = 51 8 10 80 20

Topic: Solving Equations

Question:Solve:

½ = ¾b

Answer:1 · 4 = 4 = 2

2 3 6 3

Topic: Solving Equations

Question:Solve:

1 + b = 5 6 8

Answer:5 - 1 = 15 - 4 = 11 8 6 24 24 24

Topic: Solving Equations

Question:Solve:

b – 7 = 2 4 8 5

Answer:

2 4 + 7 = 2 32 + 35 = 2 67 = 3 27 5 8 40 40 40 40

Topic: Solving Equations

Question:Solve:

b ÷ 2 = 5 5 10

Answer:5 · 2 = 10 = 1

10 5 50 5

Topic: Ratios

Question:A cake recipe calls for 2 cups sugar

and 5 cups flour. If you want to reduce the recipe and only use 1 cup of sugar, how much flour do you need?

Answer: 2.5 cups flour

Topic: Rates

Question:Which is the better buy?

6 video games for $67.923 video games for $33.60

Answer:Unit rate: 6 @ $11.32 each

Unit rate: 3 @ $11.20 each 3 for $33.60 is the better buy

Topic: Proportions

Question:Set up and solve using a proportion.

Suzie can run 2 miles in 22 minutes. How long will it take her to run 2 ½

miles?

Answer:22 min = ?___ 22 ∙ 2.5 = 2 ∙ ?

2 mile 2.5 miles 55 = 2 ∙ ? 2 2 27.5 = ? 27.5 minutes

Topic: % of a number

Question:On a $55.00 dinner bill you want to leave 15% tip. What is 15% of $55.00?

Answer:? = 15% 55 ∙ 15 = 100 ∙ ? or 55 or 100% ------- 55 55 100 825 = 100 ∙ ? ∙ .15 10%

------- 5.5 100 = 100 ∙ ? 275 5% ------- 2.75 $8.25 = ? +550 15% ------ 8.25

8.25

15% of $55.00 is $8.25