Unit 3: Change and The Metric System
Topic B: Making Change
When you make change, your first goal is to get a number that ends in 0 or 5. For example, if you bought something for $4, the first thing to do would be to get to $5. Check out example A below.
Example A
$4 to $5
To get from $4 to $5, you would need 1 loonie.
Example B
$23 to $25
To get from $23 to $25, you would need 1 toonie.
Example C
$55 to $60
To get from $55 to $60, you would need 1 five dollar bill.
Exercise 1
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. Check your work using the answer key at the end of the exercise.
- $33 to $35
- $48 to $50
- $16 to $20
- $68 to $70
- $10 to $15
- $35 to $40
- $55 to $60
- $85 to $90
- $60 to $70
- $90 to $100
- $30 to $40
- $40 to $50
- $30 to $50
- $70 to $80
- $80 to $100
- $45 to $50
- $21 to $25
- $55 to $60
- $45 to $50
- $40 to $50
- $70 to $80
Answers to Exercise 1
- 1 toonie
- 1 toonie
- 2 toonies
- 1 toonie
- 1 $5 bill
- 1 $5 bill
- 1 $5 bill
- 1 $5 bill
- 1 $10 bill
- 1 $10 bill
- 1 $10 bill
- 1 $10 bill
- 1 $20 bill
- 1 $10 bill
- 1 $20 bill
- 1 $5 bill
- 2 toonies
- 1 $5 bill
- 1 $5 bill
- 1 $10 bill
- 1 $10 bil
Exercise 2
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. Check your work using the answer key at the end of the exercise.
Example: $56 to $60. You require 2 toonies to get to $60.
- $28 to $30
- $35 to $40
- $90 to $100
- $32 to $50
- $54 to $55
- $30 to $50
- $65 to $70
- $45 to $50
Answers to Exercise 2
- 1 toonie
- 1 $5 bill
- 1 $10 bill
- 1 $10 bill, 1 $5 bill, 1 toonie, and 1 loonie
- 1 loonie
- 1 $20 bill
- 1 $5 bill
- 1 $5 bill
Example D
| Need | To get to |
|---|---|
| 1 toonie | $30 |
| 1 $20 bill | $50 |
Example E
| Need | To get to |
|---|---|
| 2 toonies | $40 |
| 1 $10 bill | $50 |
Example F
| Need | To get to |
|---|---|
| 1 toonie | $65 |
| 1 $5 bill | $70 |
| 1 $10 bill | $80 |
Exercise 3
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. Check your work using the answer key at the end of the exercise.
Example:
| Need | To get to |
|---|---|
| 1 loonie | $68 |
| 1 toonie | $70 |
| 1 $10 bill | $80 |
-
$26 to $40 Need To get to -
$47 to $60 Need To get to -
$69 to $80 Need To get to -
$18 to $20 Need To get to -
$34 to $50 Need To get to -
$51 to $60 Need To get to -
$78 to $100 Need To get to -
$82 to $100 Need To get to -
$93 to $100 Need To get to -
$3 to $10 Need To get to
Answers to Exercise 3
-
$26 to $40 Need To get to 2 toonies $30 1 $10 bill $40 -
$47 to $60 Need To get to 1 loonie $48 1 toonie $50 1 $10 $60 -
$69 to $80 Need To get to 1 loonie $70 1 $10 bill $80 -
$18 to $20 Need To get to 1 toonie $20 -
$34 to $50 Need To get to 2 toonies $40 1 $10 bill $50 -
$51 to $60 Need To get to 2 toonies $55 1 $5 bill $60 -
$78 to $100 Need To get to 1 toonie $80 1 $20 bill $100 -
$82 to $100 Need To get to 1 loonie $83 1 toonie $85 1 $5 bill $90 1 $10 bill $100 -
$93 to $100 Need To get to 1 toonie $95 1 $5 bill $100 -
$3 to $10 Need To get to 1 toonie $5 1 $5 bill $10
Exercise 4
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. Check your work using the answer key at the end of the exercise.
Example: $67 to $100
| Need | To get to |
|---|---|
| 1 loonie | $68 |
| 1 toonie | $70 |
| 1 $10 bill | $80 |
| 1 $20 bill | $100 |
-
$26 Need To get to -
$13 Need To get to -
$57 Need To get to -
$49 Need To get to -
$38 Need To get to -
$74 Need To get to
Answers to Exercise 4
-
$26 Need To get to 2 toonies $30 1 $10 bill $40 3 $20 bills $100 -
$13 Need To get to 1 toonie $15 1 $5 bill $20 4 $20 bills $100 -
$57 Need To get to 1 loonie $58 1 toonie $60 2 $20 bills $100 -
$49 Need To get to 1 loonie $50 1 $10 bill $60 2 $20 bills $100 -
$38 Need To get to 1 toonie $40 3 $20 $100 -
$74 Need To get to 3 toonies $80 1 $20 bill
Exercise 5
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. Check your work using the answer key at the end of the exercise.
Example A: $2.70 from $5.00
| Need | To get to |
|---|---|
| 1 nickel | $2.75 |
| 1 quarter | $3.00 |
| 1 toonie | $5.00 |
Example B: $6.30 from $10.00
| Need | To get to |
|---|---|
| 2 dimes | $6.50 |
| 2 quarters | $7.00 |
| 1 loonie | $8.00 |
| 1 toonie | $10.00 |
Example C: $12.50 from $20.00
| Need | To get to |
|---|---|
| 2 quarters | $13.00 |
| 1 toonie | $15.00 |
| 1 – $5 bill | $20.00 |
-
$2.20 from $10.00 Need To get to -
$6.50 from $20.00 Need To get to -
$8.70 from $20.00 Need To get to -
$3.35 from $10.00 Need To get to -
$17.85 from $20.00 Need To get to -
$50.25 from $60.00 Need To get to -
$20.55 from $40.00 Need To get to -
$37.75 from $50.00 Need To get to -
$19.90 from $50.00 Need To get to -
$4.40 from $5.00 Need To get to -
$44.55 from $60.00 Need To get to -
$29.15 from $40.00 Need To get to -
$65.80 from $80.00 Need To get to -
$42.00 from $60.00 Need To get to -
$97.70 from $100.00 Need To get to -
$32.05 from $35.00 Need To get to -
$58.30 from $100.00 Need To get to -
$61.15 from $80.00 Need To get to -
$72.85 from $100.00 Need To get to -
$83.95 from $100.00 Need To get to -
$5.25 from $20.00 Need To get to -
$19.60 from $40.00 Need To get to
Answers to Exercise 5
-
$2.20 from $10.00 Need To get to 1 nickel $2.25 3 quarters $3 1 toonie $5 1 $5 bill $10 -
$6.50 from $20.00 Need To get to 2 quarters $7 1 loonie $8 1 toonie $10 1 $10 bill $20 -
$8.70 from $20.00 Need To get to 1 nickel $8.75 1 quarter $9 1 loonie $10 1 $10 bill $20 -
$3.35 from $10.00 Need To get to 1 nickel $3.40 1 dime $3.50 2 quarters $4 1 loonie $5 1 $5 bill $10 -
$17.85 from $20.00 Need To get to 1 nickel $17.90 1 dime $18 1 toonie $20 -
$50.25 from $60.00 Need To get to 3 quarters $51 2 toonies $55 1 $5 bill $60 -
$20.55 from $40.00 Need To get to 2 dimes $20.75 1 quarter $21 2 toonies $25 1 $5 bill $30 1 $10 bill $40 -
$37.75 from $50.00 Need To get to 1 quarter $38 1 toonie $40 1 $10 bill $50 -
$19.90 from $50.00 Need To get to 1 dime $20 1 $10 bill $30 1 $20 bill $50 -
$4.40 from $5.00 Need To get to 1 dime $4.50 2 quarters $5 -
$44.55 from $60.00 Need To get to 2 dimes $44.75 1 quarter $45 1 $5 bill $50 1 $10 bill $60 -
$29.15 from $40.00 Need To get to 1 dime $29.25 3 quarters $30 1 $10 bill $40 -
$65.80 from $80.00 Need To get to 2 dimes $66 2 toonies $70 1 $10 bill $80 -
$42.00 from $60.00 Need To get to 1 loonie $43 1 toonie $45 1 $5 bill $50 1 $10 bill $60 -
$97.70 from $100.00 Need To get to 1 nickel $97.75 1 quarter $98 1 toonie $100 -
$32.05 from $35.00 Need To get to 2 dimes $32.25 3 quarters $33 1 toonie $35 -
$58.30 from $100.00 Need To get to 2 dimes $58.50 2 quarters $59 1 loonie $60 2 $20 bills $100 -
$61.15 from $80.00 Need To get to 1 dime $61.25 3 quarters $62 1 loonie $63 1 toonie $65 1 $5 bill $70 1 $10 bill $80 -
$72.85 from $100.00 Need To get to 1 nickel $72.90 1 dime $73 1 toonie $75 1 $5 bill $80 1 $20 bill $100 -
$83.95 from $100.00 Need To get to 1 nickel $84 1 loonie $85 1 $5 bill $90 1 $10 bill $100 -
$5.25 from $20.00 Need To get to 3 quarters $6 2 toonies $10 1 $10 bill $20 -
$19.60 from $40.00 Need To get to 1 nickel $19.65 1 dime $19.75 1 quarter $20 1 $20 bill $40
Exercise 6
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. Check your work using the answer key at the end of the exercise.
- $1.75 from $10.00
- $54.05 from $60.00
- $96.45 from $100.00
- $28.20 from $40.00
- $73.95 from $80.00
- $32.85 from $50.00
- $9.40 from $20.00
- $85.25 from $100.00
Answers to Exercise 6
- $1.75 from $10.00
- 1 quarter
- 1 loonie
- 1 toonie
- $54.05 from $60.00
- 2 dimes
- 3 quarters
- 1 $5 bill
- $96.45 from $100.00
- 1 nickel
- 2 quarters
- $28.20 from $40.00
- 1 nickel
- 3 quarters
- 1 loonie
- $73.95 from $80.00
- 1 nickel
- 1 loonie
- 1 $5 bill
- $32.85 from $50.00
- 1 nickel
- 1 dime
- 1 toonie
- 1 $5 bill
- 1 $10 bill
- $9.40 from $20.00
- 1 dime
- 2 quarters
- 1 $10 bill
- $85.25 from $100.00
- 3 quarters
- 2 toonies
- 1 $10 bill
Exercise 7
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. Check your work using the answer key at the end of the exercise.
1 kg of chicken for $24.60
DVD Player for $25.75
Metal shelf for $75.60
Heavy duty drill costs $89.90
Skates cost $67.50
Floor lamp costs $73.95
coffee maker costs $22.40
a package of toilet paper costs $6.75
a box of laundry detergent costs $13.45
a can of baby formula costs $30.25
Answers to Exercise 7
- 1 nickel, 1 dime, 1 quarter, 1 $5 bill, 1 $10 bill, 3 $20 bill
- 1 quarter, 2 toonies, 1 $10 bill, 3 $20 bill
- 1 nickel, 1 dime, 1 quarter, 2 toonie, 1 $20 bill
- 1 dime, 1 $10 bill
- 2 quarters, 1 toonie, 1 $10 bill, 1 $20 bill
- 1 nickel, 1 loonie, 1 $5 bill, 1 $20 bill
- 1 dime, 2 quarters, 1 toonie, 1 $5 bill, 1 $10 bill, 3 $20 bill
- 1 quarter, 1 loonie, 1 toonie, 1 $10 bill, 4 $20 bill
- 1 nickel, 2 quarters, 1 loonie, 1 $5 bill, 4 $20 bill
- 3 quarters, 2 toonies, 1 $5 bill, 3 $20 bill
Exercise 8
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. Check your work using the answer key at the end of the exercise.
- Mrs. Bhabra bought a food processor that cost $56.00. What change will she get from $100?
- Pablo bought Lego for $30.25. What change will she get from $100?
- A case of 6 bottles of motor oil costs $43.70. What change will you get from?
- Shampoo costs $3.95 and conditioner costs $4.95. Together with taxes, they cost $9.35. What change will you get from $100?
Answers to Exercise 8
- 2 toonies, 2 $20 bills
- 3 quarters, 2 toonies, 1 $5 bill, 3 $20 bills
- 1 nickel, 1 quarter, 1 loonie, 1 $5 bill, 1 $10 bill, 2 $20 bills
- 1 nickel, 1 dime, 2 quarters, 1 $10 bill, 4 $20 bills
Topic B: Self-Test
Mark /21 Aim 17/21
- Circle the number of coins and bills needed to get from the first number to the second number. Use the least number of coins. (4 marks)
- $76 to $80
- $22 to $25
- $40 to $50
- $55 to $60
- $76 to $80
- State the number and kind of coins or bills are needed to get from the first number to the second number. (4 marks)
- $48 to $50
- $76 to $80
- $95 to $100
- $40 to $50
- 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. (4 marks)
- $37 to $50
- $16 to $50
- $42 to $60
- $81 to $100
- 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. (9 marks)
- $23
- $41
- $68
- $72
- groceries cost $89.65
- telephone bill was $51.10
- gas for the car cost $61.60
- Czelinski bought a new vacuum cleaner for $86.35. What change will get from $100?
- Uchida bought a new frying pan for $39.20. How much change will she get back from $100?
Answers to Topic B Self-Test
-
- 2 toonies
- 1 loonie, 1 toonie
- 1 $10 bill
- 1 $5 bill
-
- 1 toonie
- 2 toonies
- 1 $5 bill
- 1 $10 bill
-
- 1 toonie, 1 toonie, 1 $10 bill
- 2 toonies, 1 $10 bill, 1 $20 bill
- 1 loonie, 1 toonie, 1 $5 bill, 1 $10 bill
- 2 toonies, 1 $5 bill, 1 $10 bill
-
- 1 toonie, 1 $5 bill, 1 $10 bill, 3 $20 bill
- 2 toonies, 1 $5 bill, 1 $10 bill, 2 $20 bills
- 1 toonie, 1 $10 bill, 1 $20 bills
- 1 loonie, 1 toonie, 1 $5 bill, 1 $20 bill
- 1 dime, 1 quarter, 1 $10 bill
- 1 nickel, 1 dime, 3 quarters, 1 loonie, 1 toonie, 1 $5 bill, 2 $20 bills
- 1 nickel, 1 dime, 1 quarter, 1 loonie, 1 toonie, 1 $5 bill, 1 $10 bill, 1 $20 bill
- 1 nickel, 1 dime, 2 quarters, 1 loonie, 1 toonie, 1 $10 bill
- 1 nickel, 3 quarters, 1 $20 bills