Let’s go row by row and calculate each step carefully.
We are rounding the bill first (as instructed), then calculating 10%, 15%, and 20% of that rounded amount.
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Row 1: $42.95 → Round to nearest 10
- Nearest 10 to $42.95 is
$40
- 10% of $40 = $4.00
- 15% of $40 = $6.00 (because 10% + 5% = $4 + $2)
- 20% of $40 = $8.00
✔ Row 1: $40 | $4.00 | $6.00 | $8.00
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Row 2: $149.45 → Round to nearest 10
- Nearest 10 to $149.45 is
$150
- 10% of $150 = $15.00
- 15% of $150 = $22.50 (10% = $15, 5% = half of that = $7.50 → $15 + $7.50)
- 20% of $150 = $30.00
✔ Row 2: $150 | $15.00 | $22.50 | $30.00
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Row 3: $19.36 → Round to nearest 10
- Nearest 10 to $19.36 is
$20
- 10% of $20 = $2.00
- 15% of $20 = $3.00 (10% = $2, 5% = $1 → total $3)
- 20% of $20 = $4.00
✔ Row 3: $20 | $2.00 | $3.00 | $4.00
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Row 4: $5.66 → Round to nearest dollar
*(Note: This one says “To Nearest dollar”, not 10)*
- Nearest dollar to $5.66 is
$6
- 10% of $6 = $0.60
- 15% of $6 = $0.90 (10% = $0.60, 5% = $0.30 → total $0.90)
- 20% of $6 = $1.20
✔ Row 4: $6 | $0.60 | $0.90 | $1.20
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Row 5: $31.77 → Round to nearest 10
- Nearest 10 to $31.77 is
$30
- 10% of $30 = $3.00
- 15% of $30 = $4.50 (10% = $3, 5% = $1.50 → total $4.50)
- 20% of $30 = $6.00
✔ Row 5: $30 | $3.00 | $4.50 | $6.00
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Row 6: $22.16 → Round to nearest 10
- Nearest 10 to $22.16 is
$20
- 10% of $20 = $2.00
- 15% of $20 = $3.00
- 20% of $20 = $4.00
✔ Row 6: $20 | $2.00 | $3.00 | $4.00
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Row 7: $47.05 → Round to nearest 10
- Nearest 10 to $47.05 is
$50
- 10% of $50 = $5.00
- 15% of $50 = $7.50 (10% = $5, 5% = $2.50 → total $7.50)
- 20% of $50 = $10.00
✔ Row 7: $50 | $5.00 | $7.50 | $10.00
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Final Answer:
Row 1: Rounded Bill = $40 → Tips: $4.00 (10%), $6.00 (15%), $8.00 (20%)
Row 2: Rounded Bill = $150 → Tips: $15.00 (10%), $22.50 (15%), $30.00 (20%)
Row 3: Rounded Bill = $20 → Tips: $2.00 (10%), $3.00 (15%), $4.00 (20%)
Row 4: Rounded Bill = $6 → Tips: $0.60 (10%), $0.90 (15%), $1.20 (20%)
Row 5: Rounded Bill = $30 → Tips: $3.00 (10%), $4.50 (15%), $6.00 (20%)
Row 6: Rounded Bill = $20 → Tips: $2.00 (10%), $3.00 (15%), $4.00 (20%)
Row 7: Rounded Bill = $50 → Tips: $5.00 (10%), $7.50 (15%), $10.00 (20%)
Parent Tip: Review the logic above to help your child master the concept of tip worksheet.
