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Multiplying By Multiples of 10
© 2012 Elizabeth Hill
What are we learning?
Our Standard Says
Students will further develop their understanding of multiplication of whole
numbers and develop the ability to apply it in problem solving by understanding the effect
on the product when multiplying by multiples10.
© 2012 Elizabeth Hill
What are we learning?
I can correctly multiply a number by 10’s and 100’s
numbers.© 2012 Elizabeth Hill
Let’s Review
What are the 4 ways to show
multiplication?
Groups o
f
4 x 6 sa
ys
4 gro
ups of 6
Rows of4 x 6 says
4 rows of 6
Times I
Add
4 x 6 says
4 times I
add 6
Times I Count By
4 x 6 says
4 times I count
by 6
© 2012 Elizabeth Hill
A 3rd Grader’s Best Friend
These are called
factors!
Factors are the numbers
you are multiplying.
These are products!
© 2012 Elizabeth Hill
Follow each
number from
top to
bottom or from
left
to right.
What is happening
when you go from
top to bottom or
from left to right
from a num
ber?
That’s right! You
are just counting
by that number.
Remem
ber if you
can count by a
number you can
multiply.
© 2012 Elizabeth Hill
Can you use what
you know to find
the missing
numbers?
Hint
Find w
hich fa
ctor i
s
easie
st to
count b
y:
the
one on to
p or
the
one on b
ottom
.
© 2012 Elizabeth Hill
What are mulitples of 10?
The multiplies of 10 are the numbers you get when counting by 10.
© 2012 Elizabeth Hill
To be able to multiply by multiples of 10, you
have to know your basic facts.
30 x 6=
50 x 3=
400 x 7=
800 x 4=
© 2012 Elizabeth Hill
You can also use a
multiplication
chart to find the
answer to a
multiplication
problem.
Let’s use the chart to find some products!
Find th
e answ
er to
4 x 6=
Find th
e answ
er to
8 x 7=
Find th
e answ
er to
3 x
9=
© 2012 Elizabeth Hill
Introducing…
Zero the Hero© 2012 Elizabeth Hill
Zero the HeroZero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!© 2012 Elizabeth Hill
How can Zero the Hero help you?
30
X 4
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
1 Zero
120 30 X 4=120© 2012 Elizabeth Hill
How can Zero the Hero help you?
50
X 6
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
1 Zero
30 0 50 X 6=300© 2012 Elizabeth Hill
How can Zero the Hero help you?
70
X 3
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
1 Zero
210 70 X 3=210© 2012 Elizabeth Hill
How can Zero the Hero help you?
90
X 8
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
1 Zero
720 90 X 8=720© 2012 Elizabeth Hill
How can Zero the Hero help you?
60
X 7
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
1 Zero
420 60 X 7=420© 2012 Elizabeth Hill
Try These With Your Partner 40
X 8
20
X 5
50
X 9
60
X 3
90
X 7
40
X 5
© 2012 Elizabeth Hill
You and your partner only need 1 sheet of paper
between you.
1. Fold the paper into quarters.
2. Write one multiplying by multiple of ten problem in each
section. Ex: 70 x 3=
3. Now one of you take the paper and ball it up.
4. The other one throw it across the room.
SNOWBALL FIGHT
© 2012 Elizabeth Hill
Now open your paper and work
with your partner to solve
it. © 2012 Elizabeth Hill
Time for a Challenge
300
X 4
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
2 Zero
s
1200 300 X 4=1,200© 2012 Elizabeth Hill
Time for a Challenge
500
X 8
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
2 Zero
s
40 00 500 X 8=4,000© 2012 Elizabeth Hill
Time for a Challenge
900
X 6
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
2 Zero
s
54 00 900 X 6=5,400© 2012 Elizabeth Hill
Tricky, Tricky
7000
X 6
Zero is the hero.
He just won’t stop!
All you do is count him,
At the top!
You add those zeros,
To the basic fact,
And you will get the answer,
Just like THAT!
3 Zero
s
42 000 7000 X 6=42,000© 2012 Elizabeth Hill
Test Practice
There are 50 chips in a bag. If David buys 7 bags of chips, how many chips
will he have?
a.35b.350c.300d.120
© 2012 Elizabeth Hill
Test Practice
If 9 x 7 is 63, then what is 900 x 7?
a.63b.630c.6300d.1600
© 2012 Elizabeth Hill
Test Practice
When baking chocolate chip cookies, Mrs. Hill wanted to put 20 chocolate chips in
each cookie. If she bakes 30 cookies, how many total chocolate chips will she need?
a.50b.60c.600d.500
© 2012 Elizabeth Hill
Thank you for purchasing from Tricks of the Trade.
I use this Powerpoint presentation in my classroom as a 3 day unit. I focus on using the multiplication chart for the first day. The next day I teach the song and practice with
multiplies of tens. The final day we practice multiplying with multiples of one hundred. I use several games and other activities that you can find in my store in my TpT store. I
also use several videos which you can see on my blog at http://tricksoftheteachingtrade.blogspot.com
or “Like” my Facebookhttps://www.facebook.com/tricksoftheteachingtrade
© 2012 Elizabeth Hill: Tricks of the Teaching Trade. All rights reserved. Purchase of this unit entitles the purchaser the right to reproduce the pages in limited quantities for classroom use only. Duplication for an entire school, an entire
school system or commercial purposes is strictly forbidden without written permission from the publisher. Tricks of the Teaching Trade, 1109 Summerfield Dr. Cairo, GA 39828, http://tricksoftheteachingtrade.blogspot.com/
Copying any part of this product and placing it on the internet in any form (even a personal/classroom website) is strictly forbidden and is a violation of the Digital Millennium Copyright Act (DMCA). These items can be picked up in a
google search and then shared worldwide for free.