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Math worksheet for comparing decimal numbers with interest calculations.

Worksheet with 12 math problems comparing decimal numbers, each with principal, interest rate, time, and simple interest values.

Worksheet with 12 math problems comparing decimal numbers, each with principal, interest rate, time, and simple interest values.

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Show Answer Key & Explanations Step-by-step solution for: Calculating Interest Worksheets
1. $ P = 822,750 $, $ r = 0.045 $, $ t = 15 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 822,750(1 + 0.045/1)^{1 \times 15} $
- $ A = 822,750(1.045)^{15} $
- $ A = 822,750 \times 1.935282 $
- $ A = 1,591,086.18 $
- $ I = A - P $
- $ I = 1,591,086.18 - 822,750 $
- $ I = 768,336.18 $

2. $ P = 828,870 $, $ r = 0.035 $, $ t = 20 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 828,870(1 + 0.035/1)^{1 \times 20} $
- $ A = 828,870(1.035)^{20} $
- $ A = 828,870 \times 1.989789 $
- $ A = 1,649,665.62 $
- $ I = A - P $
- $ I = 1,649,665.62 - 828,870 $
- $ I = 820,795.62 $

3. $ P = 808,850 $, $ r = 0.07 $, $ t = 10 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 808,850(1 + 0.07/1)^{1 \times 10} $
- $ A = 808,850(1.07)^{10} $
- $ A = 808,850 \times 1.967151 $
- $ A = 1,589,338.83 $
- $ I = A - P $
- $ I = 1,589,338.83 - 808,850 $
- $ I = 780,488.83 $

4. $ P = 827,450 $, $ r = 0.05 $, $ t = 15 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 827,450(1 + 0.05/1)^{1 \times 15} $
- $ A = 827,450(1.05)^{15} $
- $ A = 827,450 \times 2.078928 $
- $ A = 1,720,752.47 $
- $ I = A - P $
- $ I = 1,720,752.47 - 827,450 $
- $ I = 893,302.47 $

5. $ P = 827,000 $, $ r = 0.03 $, $ t = 20 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 827,000(1 + 0.03/1)^{1 \times 20} $
- $ A = 827,000(1.03)^{20} $
- $ A = 827,000 \times 1.806111 $
- $ A = 1,494,552.79 $
- $ I = A - P $
- $ I = 1,494,552.79 - 827,000 $
- $ I = 667,552.79 $

6. $ P = 831,800 $, $ r = 0.025 $, $ t = 25 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 831,800(1 + 0.025/1)^{1 \times 25} $
- $ A = 831,800(1.025)^{25} $
- $ A = 831,800 \times 1.853241 $
- $ A = 1,541,626.46 $
- $ I = A - P $
- $ I = 1,541,626.46 - 831,800 $
- $ I = 709,826.46 $

7. $ P = 832,900 $, $ r = 0.03 $, $ t = 10 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 832,900(1 + 0.03/1)^{1 \times 10} $
- $ A = 832,900(1.03)^{10} $
- $ A = 832,900 \times 1.343916 $
- $ A = 1,119,652.99 $
- $ I = A - P $
- $ I = 1,119,652.99 - 832,900 $
- $ I = 286,752.99 $

8. $ P = 835,000 $, $ r = 0.035 $, $ t = 15 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 835,000(1 + 0.035/1)^{1 \times 15} $
- $ A = 835,000(1.035)^{15} $
- $ A = 835,000 \times 1.675351 $
- $ A = 1,398,436.99 $
- $ I = A - P $
- $ I = 1,398,436.99 - 835,000 $
- $ I = 563,436.99 $

9. $ P = 831,900 $, $ r = 0.02 $, $ t = 15 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 831,900(1 + 0.02/1)^{1 \times 15} $
- $ A = 831,900(1.02)^{15} $
- $ A = 831,900 \times 1.345868 $
- $ A = 1,119,918.99 $
- $ I = A - P $
- $ I = 1,119,918.99 - 831,900 $
- $ I = 288,018.99 $

10. $ P = 830,000 $, $ r = 0.04 $, $ t = 20 $, $ n = 1 $
- $ A = P(1 + r/n)^{nt} $
- $ A = 830,000(1 + 0.04/1)^{1 \times 20} $
- $ A = 830,000(1.04)^{20} $
- $ A = 830,000 \times 2.191123 $
- $ A = 1,818,632.09 $
- $ I = A - P $
- $ I = 1,818,632.09 - 830,000 $
- $ I = 988,632.09 $
Parent Tip: Review the logic above to help your child master the concept of simple interest word problems worksheet.
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