Topic 4 Review

Multiple Choice

A large envelope is 0.085 cm thick. How thick would a stack of 100 of these envelopes be?

• 0.00085 cm

• 0.85 cm

• 8.5 cm

• 85 cm

Fill in the Blanks

Caden colored in the decimal grid shown. Write an expression that shows the area he colored.

Fill in the Blanks

What is 0.4 x 0.5?

Multiple Choice

6 x 0.5

• 30

• 0.3

• 0.03

• 3

Multiple Choice

0.6 x 0.5

• 30

• 0.3

• 0.03

• 3

Multiple Choice

60 x 0.5

• 30

• 0.3

• 0.03

• 3

Multiple Choice

0.06 x 0.5

• 30

• 0.3

• 0.03

• 3

Multiple Select

Select all teh expressions that are equal to 0.48 x 0.3.

• $$\frac{48}{100}\ x\ \frac{3}{100}$$  

• $$\frac{3}{10}\ x\ \frac{48}{100}$$  

• $$\frac{48}{100}\ x\ \frac{30}{100}$$  

• $$\frac{3}{100}\ x\ \frac{48}{100}$$  

• $$\frac{48}{100}\ x\ \frac{3}{10}$$  

Multiple Select

Select each equation that the number $$10^3$$   makes true.

• 0.79 x __ = 790

• 6.3 x __ = 6,300

• 0.023 x __ = 23

• 14.5 x __ = 1,450

• 0.55 x __ = 55

Fill in the Blanks

Kaitlyn is planning a trip to Canada. Her cell phone plan includes a roaming charge of $0.48 per minute. On her first day in Canada, Kaitlyn calls her parents and talks for 10 minutes. What is the total cost of this call?

Fill in the Blanks

Kaitlyn is planning a trip to Canada. Her cell phone plan includes a roaming charge of $0.48 per minute. During her trip, Kaitlyn's call to the United States total 100 minutes. What will be the total cost for these calls?

Multiple Select

Select each equation that the decimal 0.29 makes true.

• $$10^2\ x\ _-\ =29$$  

• $$10^0\ x\ _-\ =0.29$$  

• $$10^2\ x\ _-\ =290$$  

• $$10^4\ x\ _-\ =2,900$$  

• $$10^1\ x\ _-\ =29$$  

Fill in the Blanks

Using the grid, what is 1.6 x 0.3?

Fill in the Blanks

Sara is buying party supplies. How much will 5 balloons cost?

Multiple Choice

Sara wants to buy 15 paddle balls. She uses partial products to find her total. She says, "$25.50 is much more than my estimate of 15 x $1 = $15, so my estimate is too low." Do you agree?

• Yes, she is correct

• No, she overestimated so her answer should be less than $15.

• No, she overestimated so her answer should be greater than $15.

Multiple Choice

Nina hiked 4.35 kilometers. Her sister Angela hiked 3 times as far as Nina. Which expression represents the problem? Use the bar diagram to help.

• $$4.35\ \times\ 3$$  

• $$4.35\ \times\ 1$$  

• $$4.35\ \div\ 3$$  

• $$4.35\ \div\ 1$$  

Fill in the Blanks

Nina hiked 4.35 kilometers. Her sister Angela hiked 3 times as far as Nina. How far did Angela hike?