Unit 3 Review: Change and the Metric System

You will now practice all the skills you learned in Unit 3. Check your work using the answer key at the end of the review

A. Circle the number of coins or bills you would need to get from the first number to the second number. Make sure to use the least number of coins or bills.

1. $48 to $50
   
2. $59 to $60
   
3. $73 to $80
   
4. $33 to $40
   

B. State the number and kind of coins and bills you would need to get from the first number to the second number. Make sure you use the least number of coins and bills as possible.

1. $23 to $25
2. $31 to $35
3. $85 to $90
4. $70 to $90

1. $37 to $50

   Need	To get to

2. $53 to $60

   Need	To get to

3. $77 to $100

   Need	To get to

4. $21 to $50

   Need	To get to

D. State the number and kind of coins and bills you would need to get from the first number to the second number. Make sure you use the least number of coins and bills as possible.

1. $63.54 to $80

   Need	To get to

2. $32.63 to $50

   Need	To get to

3. $20.31 to $40

   Need	To get to

4. $72.18 to $100

   Need	To get to

E. State the number and kind of coins and bills you would need to get change from $100. Make sure you use the least number of coins and bills as possible.

a.
printer for $78.36

b.
cordless phone for $55.65

F. Circle the letter of the most reasonable measure.

1. Diameter of a hockey puck
   1. 76 mm
   2. 76 m
   3. 76 cm
2. Distance from the mall to home
   1. 10 km
   2. 10 m
   3. 10 cm
3. Thickness of a blanket
   1. 10 m
   2. 10 cm
   3. 10 mm
4. Height of a tree
   1. 28 mm
   2. 28 m
   3. 28 cm

G. Choose the most reasonable measure.

1. Carlos drinks
   1. 500 L of milk
   2. 500 mL of milk
   3. 5 mL of milk
2. A thermos holds
   1. 360 mL
   2. 360 L
   3. 36 L
3. A swimming pool holds 3758          of water
4. A tube of lotion is 50         .

H. Choose the most reasonable measure.

a. A dog weighs

1. 1. 17 g
   2. 17 kg
   3. 17 mg

b. A nickel has a mass of

1. 1. 5 g
   2. 5 mg
   3. 5 kg

c. A paper clip has mass of

1. 1. 1 kg
   2. 1 mg
   3. 1 g

d. Six math books have mass of

1. 1. 2 kg
   2. 2 mg
   3. 2 g

5. Elena took 400          of vitamin A
6. Suki bought 10          of potatoes

I. Write the base unit of measure and then the prefix if one is needed.

J. Write the unit of measure you would use for each item below.

1. Paint thinner
2. Cat litter
3. Deodorant
4. Length of the street
5. Aspirin

K. Find the area of each shape.

a.

b.

c. Red Square in Moscow measures 330 m long and 70 m wide. What is the area of Red Square?

L. Find the perimeter and area of each shape.

a.

b.

Answers to Unit 3 Review

A. Circle the number of coins or bills you would need.

1. 1 toonie
2. 1 loonie
3. 1 toonie, 1 $5 bill
4. 1 toonie, 1 $5 bill

B. State the number and kind of coins and bills you would need.

1. 1 toonie
2. 2 toonies
3. 1 $5 bill
4. 1 $20 bill

C. State the number and kind of coins and bills you would need.

1. $37 to $50

   Need	To get to
   1 loonie	$38
   1 toonie	$40
   1 $10 bill	$50

2. $53 to $60

   Need	To get to
   1 toonie	$55
   1 $5 bill	$60

3. $77 to $100

   Need	To get to
   1 loonie	$78
   1 toonie	$80
   1 $20 bill	$100

4. $21 to $50

   Need	To get to
   2 toonies	$25
   1 $5 bill	$30
   1 $20 bill	$50

D. State the number and kind of coins and bills you would need.

1. $63.54 to $80

   Need	To get to
   1 penny	$63.55
   2 dimes	$63.75
   1 quarter	$64
   1 loonie	$65
   1 $5 bill	$70
   1 $10 bill	$80

2. $32.63

   Need	To get to
   4 pennies	$20.35
   1 nickel	$20.40
   1 dime	$20.50
   2 quarters	$21
   2 toonies	$25
   1 $5 bill	$30
   1 $10 bill	$40

3. $20.31 to $40

   Need	To get to
   2 pennies	$32.65
   1 dime	$32.75
   1 quarter	$33
   1 toonie	$35
   1 $5 bill	$40
   1 – $10	$50

4. $72.18 to $100

   Need	To get to
   2 pennies	$72.20
   1 nickel	$72.25
   3 quarters	$73
   1 toonie	$75
   1 $5 bill	$80
   1 $20 bill	$100

E. State the number and kind of coins and bills you would need.

1. 4 pennies, 1 dime, 2 quarters, 1 loonie, 1 $20 bill
2. 1 dime, 1 quarter, 2 toonies, 2 $20 bill
3. 2 pennies, 2 dimes, 1 $5 bill, 1 $10 bill, 2 $20 bill

F. Circle the letter of the most reasonable measure.

1. i
2. i
3. iii
4. ii

G. Choose the most reasonable measure.

1. ii
2. ii
3. L
4. mL

H. Choose the most reasonable measure.

1. ii
2. i
3. iii
4. i
5. mg
6. kg

I. Write the base unit of measure and then the prefix if one is needed.

J. Write the unit of measure you would use for each item below.

1. Paint thinner
2. Cat litter
3. Deodorant
4. Length of the street
5. Aspirin

K. Find the area of each shape.

1. [latex]A = 592 \text{ m}^2[/latex]
2. [latex]A = 6724 \text{ cm}^2[/latex]
3. [latex]A = 23100 \text{ m}^2[/latex]
4. [latex]A = 529 \text{ m}^2[/latex]

L. Find the perimeter and area of each shape.

1. [latex]P = 236 \text{ m}, A = 3312m^2[/latex]
2. [latex]P = 156 \text{ mm}, A = 1521 \text{ mm}^2[/latex]
3. [latex]P = 82 \text{ m}, A = 390 \text{ m}^2[/latex]
4. [latex]P = 192 \text{ m}, A = 2268\text{ m}^2[/latex]