review for retake week 4 and 5

Unit 1: Rational Numbers

You will not be allowed to use a calculator when answering these types of questions!!

​Absolute Value, Integers, & Fractions

Multiple Choice

Evaluate the expression.
|–5| + 8

• 3
• 13
• -13
• -3

Multiple Choice

Order from Least to Greatest

|-5|, 3, -4, -1

• -4, -1, 3, |-5|

• |-5|, -4, -1, 3

• -1, -4, |-5|, 3

• -4, 3, -1. |-5|

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Multiple Choice

-18 + 6

• -24

• 24

• -12

• 12

Multiple Choice

6 - 17

• -23

• 23

• 11

• -11

Multiple Choice

-15 - 18

• 33

• -33

• -3

• 3

Multiple Choice

16 - (-12) - 25

• -3

• 3

• -21

• -29

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Multiple Choice

(-9)(-8)

• -72
• 72
• 81
• -81

Multiple Choice

4(-20)

• 80
• -80
• 24
• -24

Multiple Choice

Which expression DOES NOT have a product of −18?

• −2 ∗ −9
• −6 ∗ 3
• −3 ∗ 6
• −9 ∗ 2

Multiple Choice

(-25) ÷ (-5)

• 5
• -5
• -20
• -30

Multiple Choice

44/-4=

• 11
• -8
• -11
• -1/11

Steps:

1. find common denominator

2. convert numerators

3. add or subtract numerators

4. simplify ​

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With Unlike Denominators: ​

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​Adding & Subtracting Fractions

Turn Mixed Numbers into Improper Fractions!!!

Do this with any operation: addition, subtraction, multiplication, or division.​

Multiple Choice

$$2\ \frac{3}{5}+\left(-\frac{1}{5}\right)$$  

• $$2\ \frac{2}{5}$$  

• $$\frac{9}{10}$$  

• $$1\ \frac{4}{35}$$  

• $$4$$  

Multiple Choice

$$-\frac{8}{5}-\frac{1}{3}$$  

• $$-1\ \frac{14}{15}$$  

• $$1\ \frac{67}{105}$$  

• $$-3\ \frac{4}{15}$$  

• $$-1\ \frac{97}{120}$$  

Multiple Choice

$$8\ \frac{7}{10}-5\ \frac{9}{10}$$  

• $$3\ \frac{1}{5}$$  

• $$2\ \frac{4}{5}$$  

• $$3\ \frac{4}{5}$$  

• $$3\ \frac{8}{10}$$  

Numerator x Numerator

Denominator x Denominator ​

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Multiply Straight Across!!

DO NOT FIND COMMON DENOMINATOR ​

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​Turn division problem into multiplication!!

Multiple Choice

$$\frac{5}{3}\times-\frac{13}{7}$$  

• $$3\ \frac{3}{21}$$  

• $$-\frac{4}{21}$$  

• $$-3\ \frac{3}{21}$$  

• $$-5\ \frac{83}{210}$$  

Multiple Choice

$$\frac{5}{6}\div\frac{3}{10}$$  

• $$2\ \frac{7}{9}$$  

• $$-\frac{1}{2}$$  

• $$\frac{1}{4}$$  

• $$5\ \frac{1}{8}$$  

Multiple Choice

On average, an adult male's body weight is about 60% water. If an adult male weighs 180 pounds, then what is his "water weight?"

• 102 pounds

• 108 pounds

• 112 pounds

• 116 pounds

Multiple Choice

Mrs. Peabody's classroom was collecting canned goods for a food drive. Her class set a goal of collecting 300 cans during the drive. At the end of the drive, her class only collected 270 cans. What percent of the goal did they meet?

• 70%

• 80%

• 90%

• 95%

Multiple Choice

Fernando had to pay $1.40 in sales tax when purchasing a shirt. If that tax rate is 7%, how much did the shirt cost?

• $17

• $18

• $19

• $20

Multiple Choice

Kim purchased a dress for $189. The dress was on sale for 75% of its original price. What was the original price of Kim's dress?

• $141.75

• $39.68

• $252

• $114

Multiple Choice

_______ is a part of a group being surveyed.

• Sample

• Population

• Random Sample

• Quartile

Multiple Choice

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

Multiple Choice

1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased
• Unbiased

Multiple Choice

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy

• thirty students who are rarely tardy

• thirty of her friends

• thirty randomly selected students from her school

Multiple Choice

The questions on a multiple choice test each have 6 answer choices. Which model can be used to simulate randomly selecting the correct answer on a 20 question multiple choice test?

• rolling a six-sided number cube 6 times
• rolling a six-sided number cube 20 times
• spinning a spinner with 4 equal sized sections 4 times
• choosing 1 marble in a bag of 20 different colored marbles

Multiple Choice

A certain brand of TV has a 50% chance of being defective. Which model could be used to determine the probability that when two TVs are chosen, they will both be defective?

• spin a spinner with 4 equal sections
• roll a die twice
• flip a coin twice
• flip a coin, then roll a die

Multiple Choice

20 out of 35 people chose American Eagle as their favorite brand. If you were to ask 400 people, about how many would pick AE?

• 189

• 300

• 228

• 208

Multiple Choice

Des buys a pack of Starbursts that has 3 orange, 6 pink, 1 yellow, and 5 red Starbursts.  She puts the candy in the bowl.  If she reaches in and grabs two Starbursts without putting one back, what is the probability that she will pick a pink and then a yellow?

• 1/35
• 7/210
• 6/225
• 2/75

Multiple Choice

Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?

• 1 ⁄ 16
• 1 ⁄ 2
• 1 ⁄ 4
• 1 ⁄ 8

Multiple Choice

Mr. Roy surveyed 60 students to find out their favorite day of the school week. If there are 550 students in the school, predict how many enjoy Fanny Pack Friday the most.

• 283 and 1/3 of a student

• 34

• 283

• 340

Multiple Choice

Timothy School District surveyed a random sample of 60 middle school students about the amount of time they watch TV. Of the students surveyed, 14 average watching more than 4 hours of TV each day. There are 1143 middle school students in the Timothy School District.

Based on the data, how many students in the whole district watch 4 hours of TV each day?

***Set up two equal proportions to solve!

***Round your answer!

• 14

• 233

• 267

• 876