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Know that8QGHUVWDQGDIUDFWLRQEDVWKHTXDQWLW\IRUPHGE\SDUWZKHQD
when all fractional parts are included, such as fourZKROHLVSDUWLWLRQHGLQWREHTXDOSDUWVXQGHUVWDQGDIUDFWLRQDEDVWKHTXDQWLW\IRUPHGE\
fourths, the result is equal to the whole and to one.
DSDUWVRIVL]HE
UNDERLYING SKILLS AND CONCEPTS:
concept of fractions;
equal shares
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Name Fractions That Equal 1
a
K
ey Ide
Names for fractions tell how many equal parts
make the whole.
The total number of parts can be one whole.
The total number of parts can be a group of things.
E x am p l E
1
Erica took all of the cake.
B – © CSL Associates, Inc. All rights reserved.
What fraction of the cake did she take?
There are 4 parts. Erica took 4 out of 4 parts.
So Erica took 4! of the cake.
Happy
Birthday
4
E x am p l E
2
Sam won the whole set of marbles.
What fraction of the set did Sam win?
There are 8 marbles.
Sam won 8 out of 8 marbles.
So, Sam won 8! of the set of marbles.
8
Chapter 19 – Lesson 2
page 221
Name
P RAC T I C E
1
What part of the cups are gray?
4
4
2
What part of the marbles are striped?
8
8
3
What part of the glasses are NOT
shaded?
4
4
4
Karen’s part of the pizza is pepperoni.
Jim’s part of the pizza is mushroom.
What part of the pizza is pepperoni
or mushroom?
2
2
Math
Reasoning
5
Number Sense
MR 2.2
Which picture does NOT show 1 shaded? How do you know?
5
A
B
C
B because it has only 3 equal parts.
page 222
Chapter 19 – Lesson 2
B – © CSL Associates, Inc. All rights reserved.
Solve.
Name
P RAC T I C E
1
What part of the apples are gray?
5
5
2
What part of the balls are baseballs?
7
7
3
What part of the hats are striped?
3
3
4
Deb’s part of the circle is gray.
Jack’s part of the circle is white.
What part of the circle is gray
or white?
4
4
Math
Reasoning
5
Number Sense
MR 2.2
Which picture does NOT show 1 colored? How do you know?
5
A
B
C
B because it only has 4 equal parts.
page 148
Home Resource and Homework
Chapter 19 Lesson 2
B – © CSL Associates, Inc. All rights reserved.
Solve.
MCX94TEG2Ch01_30.v9.4.1 2/19/01 19:51 Page 407
Name
P RAC T I C E
B – © CSL Associates, Inc. All rights reserved.
Solve.
1
What part of the cups are gray?
4
4
2
What part of the marbles are striped?
8
8
3
What part of the glasses are NOT
shaded?
4
4
4
Karen’s part of the pizza is pepperoni.
Jim’s part of the pizza is mushroom.
What part of the pizza is pepperoni
or mushroom?
2
2
Math
Reasoning
5
Number Sense
MR 2.2
Which picture does NOT show 1 shaded? How do you know?
5
A
B
C
B because it has 6 equal parts.
Chapter 19 – Lesson 2
Student Book Page
page 222
Name
P RAC T I C E
1
What part of the apples are gray?
5
5
2
What part of the balls are baseballs?
7
7
3
What part of the hats are striped?
3
3
4
Deb’s part of the circle is gray.
Jack’s part of the circle is white.
What part of the circle is gray
or white?
4
4
Math
Reasoning
5
Number Sense
MR 2.2
Which picture does NOT show 1 colored? How do you know?
5
A
B
C
B because it only has 4 equal parts.
page 148
Home Resource and Homework
Chapter 19 Lesson 2
B – © CSL Associates, Inc. All rights reserved.
Solve.