1 of 8 · percent-money-c01
8% tax on $50. Tax amount?
- We need the tax ALONE, not a total with it added. Find 8% of $50.
- 8% = 8/100 = 0.08.
- Find that part: 50 × 0.08 = 4.
- The tax is $4.00. That is the answer by itself. Do not add the $50.
Answer: 4
Solution key: Tax, tip, and the little extra
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Camp · Tax, tip, and the little extra
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2 of 8 · percent-money-c02
8% tax on $50. Total with tax?
- We want the TOTAL: original $50 plus tax.
- 8% = 0.08. Tax: 50 × 0.08 = $4.00.
- Add: 50 + 4 = $54.00.
- The total is $54.00, larger than the original $50. Check: subtracting $4.00 returns $50.
Answer: 54
3 of 8 · percent-money-c03
15% tip on $40. Tip amount?
- We need the tip ALONE, not a total with it added. Find 15% of $40.
- 15% = 15/100 = 0.15.
- Find that part: 40 × 0.15 = 6.
- The tip is $6.00. That is the answer by itself. Do not add the $40.
Answer: 6
4 of 8 · percent-money-c04
20% tip on $35. Tip amount?
- We need the tip ALONE, not a total with it added. Find 20% of $35.
- 20% = 20/100 = 0.2.
- Find that part: 35 × 0.2 = 7.
- The tip is $7.00. That is the answer by itself. Do not add the $35.
Answer: 7
5 of 8 · percent-money-c05
A $25 item, 10% off. Discount amount?
- We need the discount ALONE, not a total with it added. Find 10% of $25.
- 10% = 10/100 = 0.1.
- Find that part: 25 × 0.1 = 2.5.
- The discount is $2.50. Subtract it only if asked for the sale price.
Answer: 2.5
6 of 8 · percent-money-c06
Simple interest: $400 at 5% per year for 2 years. Interest?
- Simple interest uses the starting $400 every year. We want INTEREST, not the full balance.
- 5% = 0.05. One year’s interest: 400 × 0.05 = $20.
- For 2 years: 20 × 2 = $40.
- The interest is $40.00. Adding the starting $400 would give the balance (the total in the account), which is not what the question asks.
Answer: 40
7 of 8 · percent-money-c07
6.5% tax on $80. Tax, in dollars?
- We need the tax ALONE, not a total with it added. Find 6.5% of $80.
- 6.5% = 6.5/100 = 0.065.
- Find that part: 80 × 0.065 = 5.2.
- The tax is $5.20. That is the answer by itself. Do not add the $80.
Answer: 5.2
8 of 8 · percent-money-c08
A $60 meal plus 18% tip (no tax). Total?
- We want the TOTAL: original $60 plus tip.
- 18% = 0.18. Tip: 60 × 0.18 = $10.80.
- Add: 60 + 10.8 = $70.80.
- The total is $70.80, larger than the original $60. Check: subtracting $10.80 returns $60.
Answer: 70.8
Tax, tip, and the little extra · Camp
1 of 8 · percent-money-c01
8% tax on $50. Tax amount?
- We need the tax ALONE, not a total with it added. Find 8% of $50.
- 8% = 8/100 = 0.08.
- Find that part: 50 × 0.08 = 4.
- The tax is $4.00. That is the answer by itself. Do not add the $50.
Answer: 4
2 of 8 · percent-money-c02
8% tax on $50. Total with tax?
- We want the TOTAL: original $50 plus tax.
- 8% = 0.08. Tax: 50 × 0.08 = $4.00.
- Add: 50 + 4 = $54.00.
- The total is $54.00, larger than the original $50. Check: subtracting $4.00 returns $50.
Answer: 54
3 of 8 · percent-money-c03
15% tip on $40. Tip amount?
- We need the tip ALONE, not a total with it added. Find 15% of $40.
- 15% = 15/100 = 0.15.
- Find that part: 40 × 0.15 = 6.
- The tip is $6.00. That is the answer by itself. Do not add the $40.
Answer: 6
4 of 8 · percent-money-c04
20% tip on $35. Tip amount?
- We need the tip ALONE, not a total with it added. Find 20% of $35.
- 20% = 20/100 = 0.2.
- Find that part: 35 × 0.2 = 7.
- The tip is $7.00. That is the answer by itself. Do not add the $35.
Answer: 7
5 of 8 · percent-money-c05
A $25 item, 10% off. Discount amount?
- We need the discount ALONE, not a total with it added. Find 10% of $25.
- 10% = 10/100 = 0.1.
- Find that part: 25 × 0.1 = 2.5.
- The discount is $2.50. Subtract it only if asked for the sale price.
Answer: 2.5
6 of 8 · percent-money-c06
Simple interest: $400 at 5% per year for 2 years. Interest?
- Simple interest uses the starting $400 every year. We want INTEREST, not the full balance.
- 5% = 0.05. One year’s interest: 400 × 0.05 = $20.
- For 2 years: 20 × 2 = $40.
- The interest is $40.00. Adding the starting $400 would give the balance (the total in the account), which is not what the question asks.
Answer: 40
7 of 8 · percent-money-c07
6.5% tax on $80. Tax, in dollars?
- We need the tax ALONE, not a total with it added. Find 6.5% of $80.
- 6.5% = 6.5/100 = 0.065.
- Find that part: 80 × 0.065 = 5.2.
- The tax is $5.20. That is the answer by itself. Do not add the $80.
Answer: 5.2
8 of 8 · percent-money-c08
A $60 meal plus 18% tip (no tax). Total?
- We want the TOTAL: original $60 plus tip.
- 18% = 0.18. Tip: 60 × 0.18 = $10.80.
- Add: 60 + 10.8 = $70.80.
- The total is $70.80, larger than the original $60. Check: subtracting $10.80 returns $60.
Answer: 70.8