Lesson 2: Practice Problems

Problem 1

For each number, name its opposite.

-5
28
-10.4
0.875
0
-8,003

Problem 2

Plot the numbers -1.5, $\frac{3}{2}$ , $- \frac{3}{2}$ , and $- \frac{4}{3}$ on the number line. Label each point with its numeric value.

A number line with 5 evenly spaced tick marks. The numbers negative 2 through 2 are indicated.

Problem 3

Plot the following points on a number line.

-1.5
the opposite of -2

the opposite of 0.5
-2

Problem 4 From Unit 7 Lesson 1

Represent each of these temperatures in degrees Fahrenheit with a positive or negative number.
1. 5 degrees above zero
2. 3 degrees below zero
3. 6 degrees above zero
4. $2 \frac{3}{4}$ degrees below zero
Order the temperatures above from the coldest to the warmest.

Problem 5 From Unit 6 Lesson 5

Solve each equation.

$8 x = \frac{2}{3}$
$1 \frac{1}{2} = 2 x$
$5 x = \frac{2}{7}$
$\frac{1}{4} x = 5$
$\frac{1}{5} = \frac{2}{3} x$

Problem 6 From Unit 6 Lesson 5

Write the solution to each equation as a fraction and as a decimal.

$2 x = 3$
$5 y = 3$
$0.3 z = 0.009$

Problem 7 From Unit 3 Lesson 4

There are 15.24 centimeters in 6 inches.

How many centimeters are in 1 foot?
How many centimeters are in 1 yard?