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Browse Middle School Exponents
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Negative exponents.
Scientific notation.
 Number of Ancestors 1000 Years Ago [11/22/1999]

How many living relatives would I have had 1,000 years ago, assuming 25
years per generation?
 Numbers Expressed as Exponents [08/27/1997]

How do you express .0000025 and 758,000,000,000 using an exponent?
 Numbers with Large Exponents [08/22/2001]

How many zeros end the number 2^300 * 5^600 * 4^400?
 Ones Digit of 3^100 [08/18/1999]

What is the number in the ones place of the value of 3^100? How can you
find it without multiplying 3 one hundred times?
 Operations in Scientific Notation [08/30/2001]

How do you add, multiply, and divide in scientific notation?
 Ordering the Operations [11/10/1998]

Why does the order of operations have to be in that order? Who set that
specific order of operations?
 Perfect Square: Definition [10/24/1999]

What is a perfect square?
 Positive and Negative Exponents [07/27/1997]

Why does (1)^n = 1 for any even number n, and why is (17) ^8 positive?
 Power of 120 [06/12/2001]

Is there a quick way to work out 1.05 to the power of 120?
 Power or Exponent? [10/14/2003]

I always thought that 'power' was just a synonym for 'exponent'. Is
that incorrect?
 Powers [10/7/1996]

What is it called when you have a number with a superscript of another
number?
 The Purpose of Powers [07/30/2002]

I don't understand the purpose of powers, what they do, and how to use
them.
 Raising a Power to a Power [11/27/1997]

Why isn't [(x)to the 5 power]to the 8 power x?
 Raising Both Sides of an Inequality to a Power [06/19/2006]

You have to flip the sign in an inequality if you multiply both sides
by a negative number. Is there any rule that says when you have to
flip the sign if you raise both sides to a power?
 Rules of Exponent Manipulation [1/22/1996]

f sub r equals the reciprocal of ...
 Scientific Notation [09/16/1997]

I don't understand how you get the answer: 5x10 to the 3rd power = 5,000;
5x10 to the 3rd power = 5,000.
 Scientific Notation and Engineering Notation [10/10/2001]

Convert 0.000 000 000 000 000 000 000 3 to: a) scientific notation; b)
engineering notation.
 Shortcut for Computing x^n [07/05/2002]

Is there a shortcut that can be used to compute values like 3^12,
without doing 12 separate multiplications?
 Significant Digits in Measurement [08/13/2001]

I understand that there are rules to determine the significant digits in
measurement, but aren't all digits significant, especially zeros for
place value?
 Significant Figures and Scientific Notation [05/21/1997]

How do you tell how many significant figures a number has?
 Simplifying Exponential Equations [08/19/2003]

A review question: (3r^1s^2t^3)^2/27r^3st^2. I don't even know how
to begin.
 Simplifying Expressions Using Exponent Laws. [02/08/1998]

Simplify: 5 to the exponent 4/3 divided by 5 to the exponent 2/3
 Simplifying the Square Root of a Sum [09/27/2004]

Why is it that sqrt(a + b) does not equal sqrt(a) + sqrt(b)?
 Simplifying with Cube Roots [01/22/1997]

Simplify: cube root(3) / [cube root(6) + cube root(3)]
 Smaller vs. Larger Exponents and Numbers [03/24/2003]

Is a smaller number with a large exponent greater than a larger
number with a smaller exponent?
 Solve for x: 131,072 = 2^x [09/12/2001]

How do I solve the following equation for x: 131,072 = 2^x? I know the
answer is 17, but can't remember how to solve it.
 Speed of Light [06/08/2001]

What's m s^1? Why isn't it just m/s (meters per second) instead? What's
the little "1" at the end?
 Srinivasa Ramanujan [03/28/1999]

What are the mathematical contributions of Srinivasa Ramanujan?
 Straight Line on the Graph [09/10/1998]

Let f(x) = ae^(kx) where a>0 and k are constants. Show that the graph of
y = ln(f(x)) is a straight line.
 Subtracting Exponents when Dividing Like Bases [01/21/2005]

I need to simplify x to the seventh power over x to the third power.
I think I should divide 7 by 3 and put that as the
power, but that gives me x to the 2.3 repeating power, and the book
says it's x to the fourth.
 Surds [05/17/2000]

Where does the term "surd" for square roots come from?
 Talking About Exponents [06/11/2002]

When a number is cubed, would you say that it's multiplied by itself
two times, or three? And why?
 The Term Power [10/23/2001]

One of my students asked how we came to use the term power to express the
number of times we multiply a number by itself.
 Understanding Exponents [10/24/1996]

Can you help me understand exponents? What is 88^8?
 Units Digit of 2^57 [10/07/2001]

What is the units digit of 2 to the power of 57?
 Using Mod to Find Digits in Large Numbers [12/10/1996]

Find the last two digits in 1996^1996.
 Using Scientific Notation [11/01/1997]

I know it's used to multiply large numbers to get a correct answer, but I
don't understand how to do it.
 Value of 9^(9^9)? [10/21/2002]

What is the value of 9^(9^9)?
 When FOIL Fails [03/22/2001]

Find the product  (2c3)3rd power. I can do FOIL on a question to the
second power, but I cannot figure out how to do a question to the third
power.
 Who Invented the Square Root? [12/11/1996]

I've only seen long, stringy roots!
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