# MULTIPLICATION

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```					MULTIPLICATION
By:
Darren Young
MULTIPLICATION
• This power point is      • Pages
full of multiplication   •   Repeated Addition
properties, factors,     •   Commutative Property
strategies, and          •   Multiplication factor of zero
•   Multiplication factor of one
methods that will help
•   Two’s
you to better your
•   Five’s
skills and               •   Ten’s
understanding of
multiplication.
What this means is multiplication is a fast
way of adding a series of numbers.
3 x 5 means to add 3 together 5 times
or
3+3+3+3+3
6 x 4 means 6 added together 4 times or
6+6+6+6
Commutative Property
• The commutative property of
multiplication simply means it does not
matter which number is first when you
write the problem. The answer is the
same.
3 x 5 = 5 x 3 (The numbers can be
switched around and the answer is the
same.)     4x7=7x4 1x9=9x1
Multiplication Factor of
Zero
• The zero multiplication facts
0x3=0+0+0= 00x7=0+0+0
+ 0 + 0 + 0 + 0 = 0 Because of the
commutative property of
multiplication: 0 x 4 = 4 x 0 = 0 0 x
9=9x0= 0
Multiplication Factor of
One
• The one multiplication facts
1x4=1+1+1+1=41x2=1+1=2
1x5=1+1+1+1+1=53x1=39
x 1 = 9 Because of the commutative
property of multiplication: 1 x 4 = 4
x1= 41x8=8x1= 8
Two’s
• The TWO multiplication facts
Multiplication is repeated addition so: 4 x
2 = 4 + 4 = 8 (or 2 fours) 3 x 2 = 3 + 3 = 6
(or 2 threes) 5 x 2 = 5 + 5 = 10 (or 2 fives)
Because of the commutative property of
multiplication: 4 x 2 = 2 x 4 = 8 8 x 2 = 2
x 8 = 16 Any number times two is the
number doubled! 2 x 7 would be 7 + 7 or
14 6 x 2 would be 6 + 6 or 12
Fives
• The FIVE multiplication facts (Method 1) If you
can count by fives, method 1 makes the fives
simple 5 x 3 would be 3 fives. Count by five to
the third number. 5, 10, 15 (The answer is 15,
because the third number, when you count by
fives, is 15) 5 x 6 would be 6 fives. Count by fives
to the sixth number. 5, 10, 15, 20, 25, 30 (The
answer is 30.) Because of the commutative
property of multiplication: 5 x 3 = 3 x 5 = 15
5 x 6 = 6 x 5 = 30
Ten’s
• The ten’s multiplication’s is a very
easy thing to understand. Any
number multiplied by ten just adds a
zero at the end. For example:
• 2 x 10 = 20
• 30 x 10 = 300
• 155 x 10 = 1550
THE END

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 views: 80 posted: 7/23/2012 language: English pages: 10