Lesson 10: Practice Problems

Problem 1

Evaluate each expression:

Problem 2

Evaluate each expression:

Problem 3 From Unit 5 Lesson 1

Order each set of numbers from least to greatest.

Problem 4 From Unit 5 Lesson 3

.

  1. Write another sum of two numbers that equals 0.

  2. Write a sum of three numbers that equals 0.

  3. Write a sum of four numbers that equals 0, none of which are opposites.

Problem 5 From Unit 5 Lesson 6

A submarine is searching for underwater features. It is accompanied by a small aircraft and an underwater robotic vehicle.

At one time the aircraft is 200 m above the surface, the submarine is 55 m below the surface, and the underwater robotic vehicle is 227 m below the surface.

  1. What is the difference in height between the submarine and the aircraft?

  2. What is the distance between the underwater robotic vehicle and the submarine?

Problem 6 From Unit 5 Lesson 8

  1. Clare is cycling at a speed of 12 miles per hour. If she starts at a position chosen as zero, what will her position be after 45 minutes?

  2. Han is cycling at a speed of -8 miles per hour; if he starts at the same zero point, what will his position be after 45 minutes?

  3. What will the distance between them be after 45 minutes?

Problem 7 From Unit 5 Lesson 9

Fill in the missing numbers in these equations