Lesson 21 Study Guide

What is the solution of the equation

 $4\ \frac{1}{5}+x=4\ \frac{3}{5}$  ?

•  $\frac{1}{5}$  

•  $\frac{2}{5}$  

•  $\frac{3}{5}$  

•  $\frac{4}{5}$  

Which equation can be solved to find p, the weight in pounds of Gary's backpack?

• $\frac{1}{5}p=40$

• $\frac{1}{4}p=40$

• $4p=40$

• $5p=40$

What is the total number of people marching in the parade?

• 4

• 14

• 400

• 490

What is the cost of the pineapple?

• $1.80

• $2.05

• $3.30

• $3.55

The equation

 $\frac{5}{8}m=10$  has the same solution as  $\frac{1}{8}m=2$  . True or False?

• True

• False

The equation  $\frac{5}{8}m=10$  has the same solution as  $\frac{10}{8}m=5$  . True or False?

• True

• False

The equation $\frac{5}{8}m=10$  can be solved by dividing each side by  $\frac{5}{8}$  . True or False?

• True

• False

The equation  $\frac{5}{8}m=10\$ can be solved by multiplying both sides by  $\frac{8}{5}$  . True or False?

• True

• False

What is the solution to the equation $2\ \frac{1}{2}+x=3\ \frac{1}{2}$ ? 

• 1

• 5

• 6

•  $1\ \frac{1}{2}$  

What is the solution to the equation $\frac{3}{8}r=6$ ? 

•  $2\ \frac{1}{4}$  

• 8

• 16

•  $3\ \frac{3}{4}$