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

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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

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

Fill in the Blanks

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