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6-8 Accelerated 6 Unit 7 Lesson 1

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K-5 Math •6-8 Math 9-12 Math

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•Accelerated 6 Accelerated 7

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Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 •Unit 7 Unit 8 Unit 9

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•Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17 Lesson 18 Lesson 19 Lesson 20 Lesson 21 Lesson 22 Lesson 23

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Accelerated 6
Accelerated 7

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Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9

Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
Lesson 6
Lesson 7
Lesson 8
Lesson 9
Lesson 10
Lesson 11
Lesson 12
Lesson 13
Lesson 14
Lesson 15
Lesson 16
Lesson 17
Lesson 18
Lesson 19
Lesson 20
Lesson 21
Lesson 22
Lesson 23

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Curriculum

IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Unit 7, Lesson 1

Positive and Negative Numbers

Accelerated 6

Practice

Problem 1

A fish is 12 meters below the surface of the ocean. What is its elevation?
A sea bird is 28 meters above the surface of the ocean. What is its elevation?
If the bird is directly above the fish, how far apart are they?

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Problem 2

Lesson 1 Resources

Student Materials

A whale is at the surface of the ocean to breathe. What is the whale’s elevation?
The whale swims down 300 feet to feed. What is the whale’s elevation now?
The whale swims down 150 more feet. What is the whale’s elevation now?
Plot each of the three elevations as a point on a vertical number line. Label each point with its numeric value.

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Problem 3

Represent each of these temperatures in degrees Fahrenheit with a positive or negative number.
- 5 degrees above zero
- 3 degrees below zero
- 6 degrees above zero
- \(2\frac34\) degrees below zero
Order these temperatures from the coldest to the warmest.

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Problem 4

It was \(\text- 5 ^\circ \text{C}\) in Copenhagen and \(\text- 12 ^\circ \text{C}\) in Oslo. Which city was colder?

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Problem 5

ForLesson 5: One Hundred Percent

Han wants to buy a \$30 ticket to a game, but the pre-order tickets are sold out. He knows there will be more tickets sold on the day of the game, with a markup of 200%. How much should Han expect to pay for the ticket if he buys it the day of the game?

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Problem 6

ForLesson 10: Rectangles and Triangles with Fractional Lengths

A rectangle has an area of 24 square units and a side length of \(2\frac34\) units. Find the other side length of the rectangle. Show your reasoning.

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