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

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