TOPICS
This page:
multiplication
Search
Dr. Math
See also the
Dr. Math FAQ:
multiplication facts
and
order of operations
Internet Library:
multiplication
T2T FAQ:
learning to multiply
ELEMENTARY
Arithmetic
addition
subtraction
multiplication
division
fractions/decimals
Definitions
Geometry
2dimensional
circles
triangles/polygons
3D and higher
polyhedra
Golden Ratio/
Fibonacci Sequence
History/Biography
Measurement
calendars/
dates/time
temperature
terms/units
Number Sense/
About Numbers
infinity
large numbers
place value
prime numbers
square roots
Projects
Puzzles
Word Problems

Browse Elementary Multiplication
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Flashcards/worksheets on the Web.
Learning to multiply.
Least common multiple, Greatest common factor.
Number sentences.
Order of operations.
 Square Numbers [07/27/1999]

Can you explain what a square number is?
 Squaring TwoDigit Numbers Ending in 5 [09/10/2001]

Take the first digit, multiply it by the next consecutive number, and
place it in front of 25. Can you prove this shortcut?
 Sum of Products [11/01/1999]

When a word problem refers to the sum of the products, what exactly does
it mean?
 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.
 Times Greater Than, Times As Much As [05/02/1999]

A number is five times greater than x. Will this number be 6x or 5x?
 To Multiply or Divide? That Is the Question. [09/02/2003]

In a story problem, how do you know whether to multiply or divide?
 Using Doubling to Multiply [02/20/2002]

Can you think of a way to use doubling to multiply 6 x 7?
 Using the Distributive Property [08/23/2001]

My math teacher told us to work problems like this: a(bc)= abac.
 Ways to Add and Divide More Easily [11/17/2008]

I have to add 2398 and 5752 and then divide by 37. I can do it, but it
takes a long time. Is there any faster way to do those calculations?
 What is 65 Times Ten Million? [3/29/1995]

What is 65 times ten million? Also, we've had pluses, multiples, and
times. Are there going to be any new things after that?
 What is 75% of $5000? [1/2/1995]

What is 75 percent of $5,000?
 What is a Multiple? [12/4/1995]

What is the definition of a multiple?
 What is multiplication? [11/09/1997]

What does multiplication have to do with addition, geometry, and real
life?
 Why Cancel? [02/25/2003]

Why do we have to cancel numbers?
 Why Casting Out Nines Works [10/13/2008]

Can you explain in simple terms why the Casting Out Nines method works?
 Why Does OF Mean Multiply? [12/04/2001]

I wanted to know why the word "of" means multiplication.
 Why Is Mental Math Important? [03/25/2004]

How can I convince a 14 year old girl who is in 8th grade the
importance of mental math? I think that skills like mentally adding
and subtracting 2 digit numbers and being able to estimate multiplying
2 digit large numbers are critical. My daughter's teacher says that
such skills aren't needed because of calculators and computers.
 Why Multiplying by 10 Just Adds a Zero at the End [10/18/2005]

My 8year old is having trouble understanding why multiplying by 10
just adds a 0 to the end of the number. Do you have any thoughts on
how to explain it to her?
 Why Rules? [08/15/2001]

Why do we need to have rules for order of operations?
 The Zero Power of Two [12/10/1998]

Why is 2 to the 0 power equal to 1? I don't understand how a number can
be multiplied by itself zero times.
Page: [<prev]
1
2
3
4
5
