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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.
 Associative, Distributive Properties [9/5/1996]

Please explain the associative and distributive properties.
 Basic Real Number Properties [07/31/1997]

I need information about basic real number properties: associative,
commutative, closure, identity, inverse, distributive.
 CrossMultiplication [08/04/2002]

Can you explain crossmultiplication?
 Distributive Property, Illustrated [09/28/2001]

How can I show (12*2) + (12*3) using the distributive property?
 Finger Multiplication for the 9s [06/10/1998]

Do you have any tricks for learning the times table for 9?
 Help With Multiplication and Percents [11/11/1996]

Can you help me with multiplication so that I can better understand
percents?
 Homeschooling Multiplication [7/7/1996]

My son can't seem to memorize his times tables and therefore can't
divide.
 Lattice Multiplication [8/30/1996]

Can you please explain the lattice method of multiplication?
 Lattice Multiplication Explained [10/20/1999]

Can you explain why the lattice method of multiplication works?
 Learning Only 36 of the Times Tables [11/04/2001]

My mother says that I only need to know 36 of the times tables because
problems can be reversed to a higher problem. What are the 36 problems?
 Least Common Multiple Puzzle [03/24/2003]

What is the smallest number divisible by 1,2,3,4,5,6,8,9,10 that is
not 3600?
 Manipulating Positive and Negative Numbers [8/9/1996]

Could you explain the rules for adding, subtracting, multiplying, and
dividing positive and negative numbers?
 Memorizing Multiplication Facts [02/25/2001]

I can't remember my multiplication facts. I have flash cards, but they
don't work...
 Memorizing Multiplication Tables [01/06/1997]

I am having a problem memorizing my times tables. How can I do this
easily?
 Multiples and Factors [06/02/2003]

What is the difference between multiples and factors?
 Multiples of 9 Number Puzzle [03/23/2003]

If you take a twodigit number, add the digits, and subtract the sum
from the original number, why is the answer always a multiple of 9?
 Multiplication's Multiple Meanings: Unified by the Distributive [01/01/2015]

Area? Matrix multiplication? Scaling and rotation? A parent seeks a global
understanding — or at least some internal consistency — as to what ties
together all the operations called "multiplication." Building up from the natural
numbers, where multiplication is repeated addition (MIRA), Doctor Peterson teases out two
common threads.
 Multiplying by 0 [03/09/2001]

Why, when multiplying any number by 0, do you get 0?
 Multiplying by 9, Step by Step [11/05/2001]

I need help with 9 x 240,531.
 Multiplying Two 2Digit Numbers [03/25/1997]

How do you do 28 x 24?
 Odd and Even Multiplication [02/17/1999]

Is it true that multiplying an even number and an odd or even number
always gives an even number?
 Order of Operations for Solving Equations [10/12/1995]

How would you multiply a question like this: 2(xy)^2 ?
 Order Of Operations in Four Steps [02/15/1998]

I need help figuring out what operation to do first.
 Prime Numbers [01/31/1997]

What are the prime numbers and why are they prime numbers?
 Properties of Real Numbers [05/20/1997]

What are the associative, the commutative, and the zero product
properties?
 Reciprocals [12/19/1996]

What is the use of reciprocals?
 Rectangles and Factors [09/09/1998]

How many rectangles can you make with 10 small squares? 5 small squares?
12 small squares?
 Remembering Multiplication Tables [2/5/1996]

Is there an easy way to remember multiplication tables?
 Running Laps and LCMs [02/11/1999]

Bill, Bob, and John run 1/3rd, 1/5th, and 1/6th of a lap per minute,
respectively. How many laps do they need to run to cross the finish line
at the same time?
 Russian Peasant Method of Multiplication [10/07/1998]

I understand the 'Russian peasant' method of multiplication, but not why
it works.
 Russian Peasant Multiplication [02/26/2001]

Can you explain why the Russian Peasant algorithm works? How do the
numbers added relate to the multiplier and multiplicand?
 Tips for Learning Multiplication Tables [08/13/1998]

I have great difficulty with my 4, 6, 7, 8, and 9 times tables...
 Using Parentheses [11/16/1998]

Can you explain how to use parentheses to tell the order of operations?
 What is 4/5 x 10? [2/10/1995]

What is the answer to this fraction? Please explain.
 What is an exponent? [8/8/1996]

Can you explain what an exponent is?
 Working with Integers [01/12/1999]

Could you explain how to divide, multiply, add, and subtract integers?
 3/4 of _____ Is 90 in Three Ways [03/24/2010]

In a multiplication problem like "Threequarters of _____ is ninety," how do you fillin
theblank with the factor that satisfies the equality? Doctor Ian presents three different
methods: guessandimprove; the equivalency between multiplication and division;
and multiplying through by a reciprocal.
 Adding a Zero When Multiplying a Decimal [06/21/2001]

I don't understand why you add a zero when multiplying decimals.
 Adding Tax and Tip [07/19/1998]

In pricing our hotel luncheons, we charge a base price plus a 6.8% tax
and a 20% service charge. How would I find the total in one step?
 Additive Identity and Other Properties [01/03/1999]

Can you explain the identity of zero and the commutative and
multiplicative properties? Why are they special?
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