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Five-Cent Change Calculations

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Five-Cent Change Calculations

Five-Cent Change Calculations

Australian coins and calculator

💰 Part 1: Five-Cent Rounding Rule

1. Round these amounts to the nearest five cents:

a) $3.42 = $ _______

b) $1.68 = $ _______

c) $5.91 = $ _______

d) $2.23 = $ _______

e) $4.77 = $ _______

2. Circle the correct rounding rule for Australian money:

Round 1¢ and 2¢ down, 3¢ and 4¢ up

Round 1¢ and 2¢ down, 8¢ and 9¢ up

Always round up to the nearest 10 cents

Never round money amounts

🛒 Part 2: Calculating Change

3. Calculate the change for these purchases. Remember to round first!

Example: Item costs $2.43, customer pays $5.00

Step 1: Round $2.43 to $2.45

Step 2: $5.00 - $2.45 = $2.55 change

a) Item costs $3.67, customer pays $10.00

Rounded price: $ _______

Change: $ _______

b) Item costs $1.94, customer pays $5.00

Rounded price: $ _______

Change: $ _______

c) Item costs $7.21, customer pays $20.00

Rounded price: $ _______

Change: $ _______

🧮 Part 3: Using Digital Tools

4. Use a calculator to check your work from Question 3. Tick the boxes when you've checked each answer:

Question 3a checked with calculator

Question 3b checked with calculator

Question 3c checked with calculator

5. Estimate first, then calculate the exact change:

Item costs $8.76, customer pays $15.00

My estimate: About $ _______ change

Rounded price: $ _______

Exact change: $ _______

Was my estimate reasonable? Circle: YES / NO

🏪 Part 4: Real-Life Shopping Problems

6. Multi-item purchase problem:

Sarah buys:

• Chocolate bar: $1.83

• Drink: $2.47

• Chips: $1.69

She pays with a $10 note.

Total cost before rounding: $ _______

Total cost after rounding: $ _______

Change from $10: $ _______

7. Why do we use the five-cent rounding rule in Australia?
8. Circle which coins are NO LONGER used in Australia:

1 cent coin

5 cent coin

2 cent coin

10 cent coin

🎯 Part 5: Challenge Problems

9. Budget challenge: You have $25.00 to spend. Plan your purchases and calculate your change:

Item 1: _____________ Cost: $ _______

Item 2: _____________ Cost: $ _______

Item 3: _____________ Cost: $ _______

Total before rounding: $ _______

Total after rounding: $ _______

Change from $25.00: $ _______

10. Reflection: What strategy helped you most when calculating change?

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