Transcript Muliply to Get Equivalent Fractions

Multiply to Get
Equivalent Fractions
Copyright © 2013 Kelly Mott
Equivalent Fractions
Part 1: Lesson
Part 2: YouTube Video
Part 3: Online Practice
Copyright © 2013 Kelly Mott
FOCUS QUESTION:
What are equivalent
fractions?
Copyright © 2013 Kelly Mott
• Equivalent fractions are fractions that
show the same amount, but have
different numerators and
denominators.
1
1
2
2
=
2
4
1
4
1
4
Copyright © 2013 Kelly Mott
• Equivalent fractions are sometimes
called equal fractions.
1
1
=
2
1
Copyright © 2013 Kelly Mott
FOCUS QUESTION: How
can I use multiplication
to get an equivalent
fraction?
Copyright © 2013 Kelly Mott
• You can multiply to get equivalent fractions.
• To get equal fractions, multiply the
numerator and denominator by the same
number.
1
x
2
x
=
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• j
k
1
x
3
x
=
1
x
4
x
=
Copyright © 2013 Kelly Mott
PRACTICE: Let’s make
equivalent fractions!
Copyright © 2013 Kelly Mott
Practice 1: Find Equivalent Fractions
• x
3
x
4
x
2
x
3
x
2
4
=
=
1
2
x
1
5
x
x
x
3
2
=
=
Practice 2: Find Equivalent Fractions
• x
2
x
4
x
1
x
3
x
2
4
=
=
1
2
x
4
5
x
x
x
6
2
=
=
Practice 3: Find Equivalent Fractions
• x
3
x
4
x
2
x
6
x
3
5
=
=
1
8
x
2
5
x
x
x
5
7
=
=
PRACTICE: Let’s try it a
different way!
Copyright © 2013 Kelly Mott
Equivalent Fractions
• Sometimes you’ll have problems like the one
below.
1
3
=
?
6
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Equivalent Fractions
k
1
4
2
5
j
=
=
8
10
Copyright © 2013 Kelly Mott
PRACTICE: Ready to try
some more?
Copyright © 2013 Kelly Mott
Practice 1: Find Equivalent Fractions
k
2
4
2
3
j
=
=
12
6
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Practice 2: Find Equivalent Fractions
k
3
4
1
3
j
=
=
8
12
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Practice 3: Find Equivalent Fractions
k
2
6
2
3
j
=
=
12
9
Copyright © 2013 Kelly Mott
Practice 4: Find Equivalent Fractions
k
1
5
2
4
j
=
=
15
16
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Practice 5: Find Equivalent Fractions
k
3
5
4
6
j
=
=
25
12
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Practice 6: Find Equivalent Fractions
k
1
2
2
3
j
=
=
18
9
Copyright © 2013 Kelly Mott
FOCUS QUESTION: How
do I compare fractions
to see if they are
equivalent?
Copyright © 2013 Kelly Mott
• When you compare fractions to see if they
are equivalent, find a common denominator.
• Use = or = to complete the problem below.
2
3
4
6
Copyright © 2013 Kelly Mott
PRACTICE: Let’s try
some!
Copyright © 2013 Kelly Mott
Practice 1: Use = or =
k
j
5
6
10
18
4
5
8
10
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Practice 2: Use = or =
k
j
1
5
4
10
1
4
2
8
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Practice 3: Use = or =
k
j
1
4
4
12
2
3
5
9
Copyright © 2013 Kelly Mott
PRACTICE: Word
Problems
Copyright © 2013 Kelly Mott
1. Wanda wants to make a snack. She needs 1/3 cup of milk. She
has 2/6 cup of milk. Does she have enough milk?
Question:
Steps:
Solve:
Answer in Words:
2. Jason paints 4/8 of the wall. Alexandra paints 2/4 of the wall.
Who paints more of the wall?
Question:
Steps:
Solve:
Answer in Words:
Copyright © 2013 Kelly Mott
YouTube Video: Equivalent
Fractions
http://www.youtube.com/watc
h?v=wL4hICyMLKU
Copyright © 2013 Kelly Mott
Online Practice:
Match Equivalent Fractions:
http://www.sheppardsoftware.com/mat
hgames/fractions/memory_equivalent1
.htm
Equivalent Fraction Quiz:
http://www.softschools.com/math/fracti
ons/equivalent_fractions/games/
Study Jams Quiz from Scholastic:
http://www.softschools.com/math/fracti
ons/equivalent_fractions/games/
Copyright © 2013 Kelly Mott