Math & Formulas

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Last updated 9:17 PM on 5/30/26
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20 Terms

1
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Commission Formula

Sales Price x Commission rate = Commission

2
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Sales Price Formula

Commission ÷ Commission rate = Sales Price

3
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Commission Rate Formula

Commission ÷ Sales Price = Commission Rate

4
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Net to Seller Formula

Sales Price x (100% - Commission rate) = Net to Seller

5
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Interest Formula

Principal x rate x time = interest

6
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Principal Formula

Interest ÷ rate x time = principal

7
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Interest Rate Formula

Interest ÷ principal x time = rate

8
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Effective Gross Income Formula

Scheduled gross income - vacancies & credit losses = effective gross income

9
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Net Operating Expenses Formula

Effective gross income - annual operating expenses = NOI

10
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Value Formula

NOI ÷ rate of return = value

11
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Rate of Return Formula

NOI ÷ value = rate of return

12
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Net Operating Income Formula

Value x rate of return = NOI

13
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Part Formula (Percentage Problems)

Total x rate = part

14
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Total Formula (Percentage Problems)

Part ÷ rate = total

15
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Rate Formula (Percentage Problems)

Part ÷ total = rate

16
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Triangle Formula

base x height ÷ 2 = area

17
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How many acres are in a section?

640

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How many square feet are in an acre?

43,560 square feet per acre

19
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How many feet are in a mile?

5,280 feet in a mile (one side of a section)

20
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Discount Points

1 point = 1% of the loan amount

Changes rate 1/8%.