Unit 7: Integers, Rational Numbers, and the Coordinate Plane

Vocabulary

100

Counting numbers, their opposites, and 0

integers

200

These numbers have the same distances away from 0

opposites

300

A number that can be written as a fraction or a decimal

rational number

400

The distance a number is away from 0

absolute value

500

What words describe elevation?

above sea level, at sea level, and below sea level

Opposites

100

What is the opposite of -25

25

200

True or False

Two numbers can be opposites if they have the same sign, as long as they are equal distances from 0.

False

300

The opposite of an opposite is.....

the original number

400

-(-10) + -(-6) = ???

10+6=16

500

What is something that is true about numbers that are opposites?

They are equal distances away from 0

Absolute Value

100

|-72|=???

72 

200

What has a greater value?  Why?

-9 or -1

-1 because it is closer to 0

300

The low temperature on Monday was -6 degrees Celsius. The high temperature was 9 degress Celsius. What was the change between the high and low temperature?

Hint: a number line may help

15 degrees Celsius

400

Which is closer to the surface of a lake, a fisherman at 4 feet or a fish at -5 feet?

Fisherman

500

ERROR ANALYSIS

Gino says that the change in elevation from -152 feet to 138 feet is 14 feet. What is Gino's error? Explain how to correct the error.

Gino added the integers and not their absolute values. He should add |-152| + |138|= 152+138=290 feet

Comparing and Ordering Rational Numbers

100

Which is the greater number?

-0.75 or -0.5

-0.5 because it is closer to 0. 

-0.75 is closer to -1.

200

True or False? The number to the right on a number line is always greater?

TRUE

300

Order the rational numbers from least to greatest

2, -0.5, -1, -0.75

-1, -0.75, -0.5, 2

400

When you compare numbers, what symbols/vocabulary do you use?

Greater than >, Less than <, and equal to =

500

Write an inequality that compares two rational numbers. 

Answers will vary. Teacher will check for correct answers.

Random

100

What are the 4 math operations?

Addition, Subtraction, Multiplication, and Division

200

Create and evaluate an expression using distributive property.

Answers will vary. Teacher will check for correct answers.

300

Evaluate

3 + 4(5-2x)

23-8x or -8x-23

400

70-3² x (14-12) +1

53

500

What is something that you know about Mrs. Arrington? Must be a true fact about me. 

Answers will vary.