(Start with RE Math Beginning Slide)
BASICS OF REAL ESTATE MATH
This course is to provide the Basic Concepts of Mathematics and its application for use in the Real Estate
Profession. This first chapter is rather elementary in nature, but might provide some insights into the new math
learning concepts employed by the education industry.
This course will only deal with Basic Mathematics. The course does not discuss Algebra or Geometry. Those of
you well versed in these areas will undoubtedly utilize these forms but this course will not.
Assumptions – This course assumes that you know how to:
Add and Subtract
Multiply and Divide
Be somewhat familiar with the use of percentages
Use a calculator including the “ % “ button
(On the Next Page put RE Math – Sect 1 – Pg 001 and 001A)
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Calculator Basics
Clearing Your Calculator: Before you start a calculator equation, hit the “On/Clear” button TWICE.
This will clear any answers or material you currently have on your calculator. All your previous work will be
erased from the calculator. The calculator will show “ 0 “. You should do this before you start any new
equation.
Clearing Your Equation: If you are entering a number into your calculator and you make a mistake, hit the
“On/Clear button ONCE. This will erase the wrong numbers you entered into the calculator and retain the
numbers that were already entered into the calculator.
Example: You are trying to add 22 + 22. You first enter 22 and hit the plus key. 22 shows on your
calculator. Then you make a mistake and put 23 on the calculator. Hit the “On/Clear” key ONCE. Your
calculator will still show the first correct number 22. If you hit the “On/Clear” key again (TWICE), the
calculator will show “ 0 “.
(On the Next Page put RE Math – Sect 1 – Pg 002 and 002A)
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Basic Concepts - Addition
Addition: Adding two numbers will cause the total number to increase:
22 + 22 = 44
Calculator Use: Put in 22. Hit the Plus ( + ) key. Put in 22. Hit the Equal (=) key. Answer is 44.
Note – Whenever you hit the Plus key or the Equal key, the number you entered in prior is registered on your
calculator. You must hit either key to enter your second number into the equation.
Example: If you put in the number 22 and then hit 22 before hitting the Plus key, the calculator will show 2222.
So, put in the first number, hit Plus (+), then enter the second number, and hit the Equal (=) key.
Problem Solving:
55 + 55 = ?
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Answer: 110 - Put in 55, hit the Plus key, put in 55, and hit the Equal (=) key.
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(On the Next Page put RE Math – Sect 1 – Pg 003 and 003A)
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Basic Calculations - Addition
Problem Solving: 222 + 57 = ?
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Answer: 279 - Put in 222, hit the Plus (+) key, put in 55, and hit the Equal (=) key.
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Problem Solving:
3,441 + 835 = ?
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Answer: 4,276
Put in 3,441, hit the Plus key, put in 835, and hit the Equal (=) key.
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Problem Solving: Martha is building a sidewalk that is 43 ft north and then 29 feet west. How many total feet
will she be constructing?
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Answer: 72 feet
Put in 43, hit the Plus key, put in 29, and hit the Equal (=) key.
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(On the Next Page put RE Math – Sect 1 – Pg 004 and 004A)
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Basic Concepts - Subtraction
The opposite of addition is subtraction.
Subtraction: Subtracting one number from another will cause the total to decrease:
44 - 22 = 22
Calculator Use: Put in 44. Hit the subtraction/minus ( -) key. Put in 22. Hit the Equal key. Answer is 22.
Note – Whenever you hit the Minus key or the Equal key, the number you entered in prior is registered on your
calculator. You must hit either button to enter your second number into the equation.
Example: If you put in the number 44 and then hit 22 before hitting the Minus key, the calculator will show
4422.
Problem Solving:
110 - 55 = ?
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Answer: 55
Put in 110, hit the Minus (-) key, put in 55, and hit the Equal (=) key.
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(On the Next Page put RE Math – Sect 1 – Pg 005 and 005A)
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Basic Calculations – Subtraction
Problem Solving:
279 - 57 = ?
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Answer: 222 Put in 279, hit the Minus (-) key, put in 55, and hit the Equal (=) key.
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Problem Solving: 4,279 - 835 = ?
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Answer: 3,441
Put in 4,279, hit the Minus key, put in 835, and hit the Equal (=) key.
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Problem Solving: Bill is constructing a 79 foot walk way. If 29 feet is going to be cement and the other part
beauty bark, how many feet of beauty bark will he need?
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Answer: 50 feet Put in 79, hit the Minus key, put in 29, and hit the Equal (=) key.
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(On the Next Page put RE Math – Sect 1 – Pg 006 and 006A)
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Basic Math Concept
Addition of Several Numbers
555 +
887
+ 22
+ 8 = ?
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Answer: 1,472
Put in 555, hit the Plus key, put in 887, hit the Plus key, put in 22, hit the Plus key, put in
8, and hit the Equal key.
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82 + 79 + 177 + 3,444
= ?
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Answer: 3,782 Put in 82, hit the Plus key, put in 79, hit the Plus key, put in 177, hit the Plus key, put in
3,444, and hit the Equal key.
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(On the Next Page put RE Math – Sect 1 – Pg 007 and 007A)
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Basic Calculations – Adding Several Numbers
Butch is constructing a fence around his back yard. The length is 84 feet by 99 feet by 84 feet and the house
makes up the rest of the square. How many feet of fence does Butch need to build?
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Answer: 267 feet
Put in 84, hit the Plus key, put in 99, hit the Plus key, put in 84, and hit the Equal key.
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(On the Next Page put RE Math – Sect 1 – Pg 008 and 008A)
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Basic Math Concept
Subtracting of Several Numbers
1,472
-
887
- 22
- 8 = ?
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Answer: 555 Put in 1,472, hit the Minus (-) key, put in 887, hit the Minus (-) key, put in 22, hit the Minus (-)
key, put in 8, and hit the Equal (=) key.
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3,782 - 82 - 79 - 177
= ?
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Answer: 3,444 Put in 3,782, hit the Minus (-) key, put in 82, hit the Minus (-) key, put in 79, hit the Minus
(-) key, put in 177, and hit the Equal (=) key.
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Butch is constructing a fence around his back yard. The length is 84 feet, by 99 feet, by 84 feet and the house
makes up the rest of the square. If he already has 50 feet of fencing, how many feet of fence does Butch need to
buy?
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Answer: 217 feet
Put in 84, hit the Plus (+) key, put in 99, hit the Plus (+) key, put in 84, hit the Minus (-)
key, put in 50, and hit the Equal (=) key.
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(On the Next Page put RE Math – Sect 1 – Pg 009 and 009A)
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Basic Math Concepts – Multiplication
Multiplication: Multiplying numbers TIMES each other increases the number.
22 X
22 = 484
Calculator Use: Put in 22. Hit the multiplication ( X ) key. Put in 22. Hit the Equal (=) key. Answer is 484.
Note – Whenever you hit the Multiplication ( X ) key or the Equal key, the number you entered in prior is
registered on your calculator. You must hit either key to enter your second number into the equation.
Example: If you put in the number 22 and then hit 22 before hitting the multiplication ( X ) key, the calculator
will show 2222. So, put in the first number, hit Multiplication (X) key, then enter the second number, and hit
the Equal (=) key.
Example: You are trying to multiply 22 X 22. You first enter 22 and hit the Multiplication ( X ) key. 22
shows on your calculator. Then you make a mistake and put 23 on the calculator. Hit the “On/Clear” key
ONCE. Your calculator will still show the first correct number 22. If you hit the “On/Clear” key again
(TWICE), the calculator will show “ 0 “.
(On the Next Page put RE Math – Sect 1 – Pg 010 and 010A)
(On the Next Page put an ENDING Slide)
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