Unit B Review

Classifying Numbers

100

Determine whether the given number belongs to each set. Write yes or no next to the classifications.

Number: 60

Classifications: Whole numbers, integers, rational numbers

Whole Numbers - yes

Integers - yes

Rational Numbers - yes

200

True or False. Natural numbers are also called counting numbers. 

True

300

Determine if the following number belongs in the following classifications. Write yes or no next to each classification. 

Number: 2/3

Classifications: Whole numbers, integers, rational numbers

Whole Numbers - No

Integers - No

Rational Numbers - Yes

400

These sets of numbers can't have any numbers with a part. 

What are Natural Numbers, Integers, and Whole Numbers?

500

This set of numbers can have a part, but can also be whole numbers. 

What are rational numbers?

Adding/Subtracting

100

Add the following: -7.8 + (-4.9)

-12.7

200

Which number line model shows the subtraction -3 - 5? (open in another window)

A

300

Mischa dives from a platform that is 5 meters above the water. Her dive takes her 1.7 meters below the surface of the water. How far does her dive take her in total?

6.7 meters

400

Subtract: 11.0 - (-2.5)

13.5

500

What process do we use for subtracting (whether it be integers, fractions or decimals)?

Keep Change Change

Multiplying/Dividing

100

What is 5 • 5?

25

200

What is -30 ÷ 5?

-6

300

What is -2 • -7?

14

400

What is (-1/2) • (1/5)?

-1/10

500

What is -6 ÷ 1.2?

-5

Converting1

100

What is 5/100 as a percent?

5%

200

Convert 5/6 into a decimal. 

0.833333...

300

Is 6/7 a terminating or repeating decimal?

Repeating

400

Convert 5/20 into a percent. 

25%

500

Suppose a bunny's second hop is 10% higher than her first hop. Classify the following statement as a true or false statement. 

"The Bunny's second hop was 110% of her first"

The statement is true. 

Converting2

100

How do you convert from a fraction to a decimal?

You divide, and you need to put the numerator inside the division house. 

200

Last year a college's tuition was $43,500. This year, the tuition increased by 4%, what is the new tuition amount?

The tuition is now $45,240 

300

Carissa predicted she answers 27 questions correctly out of 30 on a test but she actually got 21 correct. What is her percent error?

29% error

400

You are given the following ratio. Convert it into a fraction, decimal and percent. 

Fraction: 17/20

Decimal: 0.85

Percent: 85%

500

Which of these situations can be represented by the opposite of -73?

I. The cost of a train ticket is $73 more than expected

II. An airplane ascends 73 meters. 

III. An elevator descends 73 meters

IV. You add 73 songs to your playlist

I, II, IV