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CHAPTER RESOURCES ? Chapter 8

Multiply Fractions by Whole Numbers

INCLUDES ? School-Home Letter ? Vocabulary Game Directions ? Daily Enrichment Activities ? Reteach Intervention for every lesson ? Chapter 8 Test ? Chapter 8 Performance Task ? Answer Keys and Individual Record Forms

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Contents

Chapter 8 School-Home Letter (English) ....................................................... 8-1 Chapter 8 School-Home Letter (Spanish) ...................................................... 8-2 Vocabulary Game .......................................................................................... 8-3 8.1 Reteach .................................................................................................. 8-5 8.1 Enrich ...................................................................................................... 8-6 8.2 Reteach .................................................................................................. 8-7 8.2 Enrich ...................................................................................................... 8-8 8.3 Reteach .................................................................................................. 8-9 8.3 Enrich .................................................................................................... 8-10 8.4 Reteach ................................................................................................ 8-11 8.4 Enrich .................................................................................................... 8-12 8.5 Reteach ................................................................................................ 8-13 8.5 Enrich .................................................................................................... 8-14 Chapter 8 Test ............................................................................................. 8-15 Chapter 8 Performance Task ....................................................................... 8-21

Answer Keys ................................................................................................ 8-26 Individual Record Forms .............................................................................. 8-33

Chapter Resources

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Table of Contents

8 Letter Chapter School-Home

Dear Family,

During the next few weeks, our math class will be learning how to multiply fractions and mixed numbers by whole numbers. We will learn to write a fraction as a product of a whole number and a unit fraction, and to find multiples of unit fractions.

You can expect to see homework that provides practice multiplying fractions and whole numbers with and without using models.

Here is a sample of how your child will be taught to use a number line to find multiples of a fraction.

mixed number A number represented by a whole number and a fraction

multiple A number that is the product of a given number and a counting number

unit fraction A fraction that has 1 as its top number or numerator

Use a Number Line to Write Multiples of Fractions

Write

3

3

3 _ 4

as

the

product

of

a

whole

number

and

a

unit

fraction.

STEP 1

Start at 0. Draw jumps to find multiples of 3_4_: 3_4_, 6_4_, 9_4_.

0 1 2 3 4 5 6 7 8 9 10 4444444444

Tips

Renaming as a Mixed Number

When the numerator is greater than the denominator, the fraction can be renamed as a mixed number.

STEP 2

Write the multiple as a product of a whole number and a unit fraction.

So,

3

?

3__ 4

=

9__ 4

=

9

?

1_4_.

9 _ 4

=

4 _ 4

+

4 _ 4

+

1 _ 4

=

2

+

1 _ 4

= 21_4

Activity

Use everyday situations, such as cooking and measures to help your child practice fraction multiplication.

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8-1

8Cap?tulo

Carta

para la casa

Querida familia,

Durante las pr?ximas semanas, en la clase de matem?ticas aprenderemos a multiplicar fracciones y n?meros mixtos por n?meros enteros. Tambi?n aprenderemos a escribir fracciones como el producto de un n?mero entero y una fracci?n unitaria y a hallar m?ltiplos de fracciones unitarias.

Llevar? a casa tareas para practicar la multiplicaci?n de fracciones y n?meros enteros usando modelos y sin modelos.

Este es un ejemplo de c?mo vamos a usar una recta num?rica para hallar los m?ltiplos de una fracci?n.

fracci?n unitaria Una fracci?n que tiene al 1 como numerador, es decir, arriba de la barra

m?ltiplo Un n?mero que es el producto de cierto n?mero y un n?mero positivo distinto de cero

n?mero mixto Un n?mero que se representa por un n?mero entero y una fracci?n

Usar una recta num?rica para escribir m?ltiplos de fracciones

Escribe

3

?

3 _

4

como

el

producto

de

un

n?mero

entero

y

una

fracci?n unitaria.

PASO 1

Comienza

en

0.

Dibuja

saltos

para

hallar

los

m?ltiplos

de

3_4_:

3_4_,

6_4_,

9__ 4

Pistas

Expresarlo como un n?mero mixto

Cuando el numerador es mayor que el denominador, la fracci?n se puede expresar como un n?mero mixto.

0 1 2 3 4 5 6 7 8 9 10 4444444444

PASO 2 Escribe el m?ltiplo como el producto de un n?mero entero y una fracci?n unitaria.

9 _ 4

=

4 _ 4

+

4 _ 4

+

1 _ 4

=

2

+

1 _ 4

= 21_4

Por

lo

tanto,

3

?

3__ 4

=

9__ 4

=

9

?

1_4_.

Actividad

Use situaciones de la vida diaria, como cocinar y medir para ayudar a su hijo o hija a practicar la multiplicaci?n con fracciones.

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8-2

Chapter 8 Vocabulary Game

Going Places with

Words

Game

Pick It

For 3 players

Materials ? 4 sets of word cards

How to Play 1. Each player is dealt 5 cards. The remaining cards are

a draw pile. 2. To take a turn, ask any player if he or she has a word

that matches one of your word cards. 3. If the player has the word, he or she gives you the word

card, and you must give the definition of the word. ? If you are correct, keep the card and put the matching pair

in front of you. Take another turn. ? If you are wrong, return the card. Your turn is over. 4. If the player does not have the word, he or she answers, "Pick it." Then you take a card from the draw pile. 5. If the card you draw matches one of your word cards, follow the directions for Step 3 above. If it does not, your turn is over. 6. The game is over when one player has no cards left. The player with the most matches wins.

Word Box

estimate expanded form inverse operations period round standard form thousands word form

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8-3

Chapter 8 454A

Game Directions

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