Multiplication Number Stories free pdf ebook was written by on June 25, 2006 consist of 34 page(s). The pdf file is provided by www.qcsd.org and available on pdfpedia since March 25, 2012.

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multiplication number stories
today your child learned about another tool..group/mcgraw-hill
does your answer make sense?
2. find equal groups of objects..stars for the numbers you
rolled. how many stars are there...

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Multiplication Number Stories
Today your child learned about another tool to use when solving number stories, a
multiplication/division diagram. It can help your child organize the information in a number
story. With the information organized, your child can decide which operation ( , ) will
solve the problem. Refer to pages 259 and 260 in the
Student Reference Book
for more information.
Please return this Home Link to school tomorrow.
259 260
For the number story:
Fill in a multiplication/division diagram. Write ? for the number
you will find. Then write the numbers you know.
Use counters or draw pictures to help you find the answer.
Write the answer and unit. Check whether your answer makes sense.
1.
Elsa buys 5 packages of apples for the party. There are 6 apples in
each package. How many apples
does she have?
Answer:
(unit)
apples per
packages
package
apples
in all
Does your answer make sense?
Copyright © Wright Group/McGraw-Hill
2.
Find equal groups of objects in your home, or around your
neighborhood. Record them on the back of this page.
Examples
3 lights on each traffic light, 12 eggs per carton
3.
Write a multiplication number story about one of your groups.
Use the back of this paper. Solve the number story.
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LESSON
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41
Exploring Equal Groups
Work with a partner.
Materials
1 six-sided die
1 sheet of plain paper
36 counters (for example: pennies, centimeter cubes,
or dried beans)
6 quarter-sheets of paper
Pretend that the quarter-sheets of paper are flags.
Pretend that the pennies, cubes, or beans are stars.
1.
Roll the die twice.
The first roll tells how many flags to use.
The second roll tells how many stars to put on each flag.
2.
Work together to set up the flags and stars for the numbers you
rolled. How many stars are there on all of the flags?
3.
Use your sheet of plain paper and draw a picture.
Show all flags.
Draw dots to show all the stars on each flag.
Copyright © Wright Group/McGraw-Hill
4.
Repeat Steps 1–3.
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Arrays
Your child is learning how to represent multiplication problems using pictures called
arrays.
An array is a group of items arranged in equal rows and equal columns. Help your child use
counters, such as pennies or macaroni, to build the array in each problem. Your
child should record each solution on the dots next to the problem.
Please return this Home Link to school tomorrow.
64 65
For the next few weeks, look for pictures
of items arranged in equal rows and
columns, or
arrays.
Look in newspapers or
magazines. Have people in your family help
you. Explain that your class is making an
Arrays Exhibit.
This is a 5-by-6 array.
There are 5 rows. There
are 6 dots in each row.
There are 30 dots in all,
since 5 6 30.
Make an array with counters. Mark the dots to show the array.
1.
4 rows with 6 counters per row
a
4-by-6 array
counters
2.
3 rows with 8 counters per row
a
3
8 array
counters
Copyright © Wright Group/McGraw-Hill
3.
2 rows with 12 counters per row
a
2
12 array
counters
Practice
Write these problems on the back of this page. Solve. Show your work.
4.
331
6.
907
27
479
5.
187
17
Unit
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Name
LESSON
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42
Materials
Building Arrays
cm cubes or other counters
1 six-sided die
centimeter grid paper (Math
Masters,
p. 416)
1.
Roll the die 2 times. The first number tells how many rows to put in
the array. The second number tells how many counters to put in
each row.
Example
You roll a 1 first and then a 5. You make this figure.
2.
Draw the arrays you make on centimeter grid paper.
3.
Then, fill in the Array Table below.
How many
cubes in each
row?
How many
rows?
How many
cubes in all?
1
2
3
4
5
Copyright © Wright Group/McGraw-Hill
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Name
LESSON
Date
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42
Square Products
Work in a small group.
Materials
centimeter grid paper (Math
Masters,
p. 416)
centimeter cubes or pennies (or both)
tape
Directions
1.
Each person chooses a different number from 2 to 10.
2.
Build an array that shows your number multiplied by itself. Use
centimeter cubes or pennies.
3.
Draw each array on centimeter grid paper. Write each number
model under each array.
2
2
4
3
3
9
Copyright © Wright Group/McGraw-Hill
4
4
16
4.
Continue to build arrays with other numbers. Draw the arrays on
grid paper. You may need to tape pieces of grid paper together for
the larger arrays.
5.
Look at the arrays you made. Why do you think the products of the
number models you wrote are called square products?
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43
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Division with Counters
Your child is beginning to use division to solve number stories. A first step is to use counters,
such as uncooked macaroni or pennies, to represent each problem. This helps your child
to understand the meaning of division.
Please return this Home Link to school tomorrow.
73 74
Show someone at home how to do division using pennies, uncooked
macaroni, or other counters.
1.
25 counters are shared equally
2.
25 counters are shared equally
by 5 people.
counters per person
counters remaining
3.
31 days in January
by 10 people.
counters per person
counters remaining
4.
22 children
7 days per week
weeks in January
days remaining
5 children per team
teams
children remaining
5.
Mrs. Blair has 34 pencils to give to her 15 students. How many
pencils can she give each student?
pencils
pencils left over
Copyright © Wright Group/McGraw-Hill
6.
Caleb shared 22 jelly beans with his sister. How many jelly beans
did each child get?
jelly beans
Practice
jelly beans left over
Write these problems on the back of this page. Solve. Show
your work.
7.
9.
123
Unit
614
678
37
8.
23
8
90
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LESSON
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Equal Groups of Cookies
1.
Draw circles to show how many cookies are on each plate at the
beginning of the story.
2.
How many cookies did Grandma make altogether?
3.
Tom and Hannah arrive. Now 4 children share the cookies. Draw a
picture to show how they share the cookies.
4.
Draw a picture to show how 6 children share.
Copyright © Wright Group/McGraw-Hill
5.
At the end, there are 12 children. If each child gets 3 cookies, how
many cookies do they have altogether? Draw a picture to show how
you found your answer.
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Division Number Stories
Help your child solve the division number stories by using counters such as pennies or
uncooked macaroni to model the problems. Refer to pages 73, 74, 259, and 260 in the
Student Reference Book.
Your child is not expected to know division facts at this time.
Please return this Home Link to school tomorrow.
73 74
259 260
Use counters or draw pictures to show someone at home how you can
use division to solve number stories. Fill in the diagrams.
1.
Jamal gave 24 marbles to 4 friends.
marbles
friends
per friend
marbles
in all
Each friend got the same number of
marbles. How many marbles did
each friend get?
marbles
How many marbles were left over?
2.
Ellie had 29 cookies to put in
marble(s)
cookies
bags
per bag
cookies
in all
14 lunch bags. She put the same
number in each bag. How many
cookies did she put in each bag?
cookies
How many cookies were left over?
3.
A sheet of stamps has 46 stamps.
cookie(s)
complete
rows
stamps
per row
stamps
in all
Copyright © Wright Group/McGraw-Hill
Copyright © Wright Group/McGraw-Hill
A complete row has 10 stamps. How
many complete rows are there?
complete rows
How many stamps were left over?
stamp(s)
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Copyright © Wright Group/McGraw-Hill
Name
Follow the directions to solve each problem.
LESSON
44
1.
15
3
?
0
15
3
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Start at 0. Show hops of 3. Stop at 15. How many hops?
Equal Groups
2.
16
4
?
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
16
4
Start at 0. Show hops of 4. Stop at 16. How many hops?
Date
3.
18
6
?
0
. Stop at
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
. How many hops?
18
6
Start at 0. Show hops of
4.
20
5
?
Time
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
. Stop at
. How many hops?
20
5
Start at
. Show hops of
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Equal Sharing Mystery Number
1.
Find the Mystery Number for three different Start Numbers.
In Trial #1, the Start Number and 2nd Number should be less than 10.
In Trial #3, the Start Number and 2nd Number should each have
three digits. Use your calculator.
Step
What to Do
Trial #1
Trial #2
Trial #3
1
2
3
4
5
6
Mystery
Number!
Start Number—write a
number greater than 1.
2nd Number—write a number
greater than 1.
Multiply the Start Number
times your 2nd Number.
Subtract the Start Number
from the number in Step 3.
Subtract 1 from the 2nd
Number.
Divide the number in Step 4
by the number in Step 5.
2.
Look for patterns in the table and discuss the patterns with a partner.
3.
Predict what the Mystery Number will be if the Start Number is 4.
Copyright © Wright Group/McGraw-Hill
4.
Use counters to show what happened when you followed the steps in Trial
#1. Draw a picture on the back of this page.
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