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Browse Middle School Negative Numbers
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Inequalities and negative numbers.
Positive/negative integer rules.
 Adding a Negative: Absolute Value and Parentheses [08/25/2001]

When we get into the absolute value symbols and the parentheses it goes
completely over my head! For example: 0(2).
 Converting Words to Numbers [06/03/1998]

Can you help me find integers to represent phrases such as "5 degrees
below zero"?
 Distributive Law [8/2/1996]

Why does "(y sq  y)" become "y sq + y?" Why does the subtraction sign
change to addition?
 Dividing by a Negative Fraction [01/24/2002]

I understand how to divide fractions, but what if one of them is
negative?
 Dividing Negative Exponents [10/14/1998]

Why does a negative exponent become positive when you divide by it?
 Exponents and Negative numbers [03/02/1997]

Why wouldn't the answer to 3 squared, standing alone and without
parenthesis or brackets, be 9?
 Introduction to Negative Numbers [08/11/1998]

What is 11  12? How can you subtract more than what you have?
 Manipulating Positive and Negative Numbers [8/9/1996]

Could you explain the rules for adding, subtracting, multiplying, and
dividing positive and negative numbers?
 Multiplying Negative by Negative [11/6/1994]

Neg x Neg = Pos just doesn't make sense. Does it ever happen in real
life?
 Negative Bases [06/10/1999]

Are there such things as negative bases?
 Negative Number Rules [01/05/1998]

When do two negative numbers equal a positive?
 Negative Times a Negative [01/12/1997]

Can you give an example why a negative times a negative is positive?
 Negative Times Negative [10/17/1998]

An example using videotaping to explain how a negative times a negative
is a positive.
 Operating on Negative Numbers [10/21/1996]

I have lots of problems multiplying and dividing integers  the negative
and positive numbers give me a really hard time.
 Picturing Negative Numbers [11/03/2002]

If I have 4 apples and eat them, I get 0 apples. But I can't eat
another apple, so how do I get to minus 1?
 Prove That (a) = a [09/11/2001]

How do you prove that (a) = a using the properties of real numbers?
What about 1 * 1 = 1?
 Signs: Rules, Number Line [07/13/2001]

What is ()  (+) = ? or (+) + () = ?
 Squaring Negative Numbers [02/19/2002]

Does 9^2 = 81 or 81?
 Subtracting Negative Integers  Number Line [10/15/1996]

How do you subtract integers like 5(6) ?
 Subtracting Negative Numbers [03/30/1997]

I have trouble explaining subtracting negative numbers to my students. I
think the underlying problem is that I truly don't understand it myself.
 Subtracting Numbers by Walking a Number Line [09/12/2001]

For example: 8.1 6.9 = 1.2 and 9.9 11.1 = 1.2. All the numbers are
negative, so why is the answer to the first problem negative but the
second isn't?
 Subtracting Positive and Negative Numbers [5/21/1996]

How would you figure out the answer to 13  6 = ? and how can you
subtract a negative number from a positive number or a positive number
from a negative number?
 Tips for Negative and Positive Numbers [11/30/2001]

I really get confused when adding a negative and a positive.
 Working with Integers [01/12/1999]

Could you explain how to divide, multiply, add, and subtract integers?
 6 times 6 [11/3/1994]

I really need to know what the answer to this problem is. 6 X 6
 91  92 = ? [01/23/1997]

What does 91  92 equal?
 Adding and Subtracting Integers [12/31/1997]

Adding and subtracting integers like 12 + (4) = ...
 Adding and Subtracting Integers [04/17/2006]

Can you explain how to add and subtract negative numbers?
 Adding and Subtracting Negative Integers as Temperatures [01/08/2004]

If it's 20 degrees outside and it decreases 3 degrees what
temperature is it? I know the answer is 23 degrees but it seems like
it should be 17 degrees.
 Adding and Subtracting Negative Numbers [02/07/2002]

What is (1)  5 + 8 equal to?
 Adding Negative Numbers [03/12/1997]

What are examples of adding negative numbers in the real world?
 Adding Negatives [12/04/1997]

What is 2  7/10 ? Is it 1 3/10 or 2 7/10?
 Adding Positives and Negatives [12/01/1998]

I'm having trouble solving problems like these: 31+(46)=b, a=16+( 36),
and 74+(63)=d.
 Algebra and Exponents: 4^2 = ? [06/30/1998]

I had an argument with a professor over this topic. I say 16, he says 
16.
 Algebraic Proof That Positive Times Negative Equals Negative [03/28/2004]

Is there an algebraic proof that a positive times a negative equals a
negative?
 Algebra Tiles and Negatives [11/05/2001]

Use a model (algebra tiles) to demonstrate that a negative times a
negative = a positive.
 Avoiding Careless Mistakes [01/30/2002]

How can I avoid careless mistakes?
 Can a Number to the Zero Power be 1? [01/25/2002]

My teacher told me that (3^0) is equal to 1. Is this true?
 Celsius to Fahrenheit [04/26/1999]

How do you convert Celsius to Fahrenheit?
 Converting Negative Mixed Numbers to Improper Fractions [10/25/2006]

When converting a negative mixed number into an improper fraction, it
seems like we ignore the rules for integer addition. For example, to
convert 4 1/7 we think 4 1/7 = 4 * 7 + 1 = 28 + 1 = 27/7. But the
correct answer is 29/7. How does 28 + 1 make 29?
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