Saturday
March 28, 2015

Homework Help: Math 213 Elementary Math

Posted by Shay on Friday, August 7, 2009 at 4:05pm.

20. Think of a number.
Add 7.
Double the result.
Subtract 8.
Double the result.
Add 12.
Divide by 4.
Subtract 6.
Your answer will be the original number. Explain how this trick works.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

elementary - Think of a number. Add 7. Double the result. Subtract 8. Double the...
arithmetic - How does this work “Think of a #. Add 7. Double the result. ...
math - Think of a number. Add 17. Double the result.Subtract 4. Double the ...
Algebra - Hello all! I had a quick homework question: I have to prove that the ...
Algebra - Pick a number. Double it. Multiply the result by 3. Add 24. Divide by ...
INTRODUCTORY ALGEBRA - FOR HOMEWORK I HAVE TO DO A NUMBER TRICK BY PICKING A ...
Algebra - How do I express this in algebraic form? And could you please explain ...
math for elementry school teacher - Mr. Mathemagician asks you to pick any whole...
math - What are the divisibility short cuts that help you out? Odd numbers can ...
math - The initial amount is 1 million. Divide it by 4. Divide the result by 5. ...

Members