This document is a lesson plan on adding and subtracting fractions. It includes examples of fraction addition and subtraction problems, as well as explanations of necessary concepts like common denominators. Students are provided practice problems at the end to solve. The overall goal is to teach students how to perform calculations with fractions and understand the steps involved in adding or subtracting fractions.

1. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
AIM: Adding and Subtracting
Fractions
Do Now
Round the following to the nearest whole number.
a.) 5.6 b.) 4.2596
Round the following to the nearest tenth.
a.) 2.38 b.) 0.247
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2. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Blog
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3. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Anticipatory Set
Brain Pop
In the video they said you need to
multiply 9 by four, then multiply the
numerator by four. Why?
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4. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Parts of a Fraction
5 Numerator
15 Denominator
How do we simplify this fraction?
5
15
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5. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
1 2
A recipe calls for cups of white
3
4
flour and 5 cups of whole wheat flour.
How many cups of flour are needed in
total?
Add the following. Write your answer in
simplest form.
2 4
3
+ 5
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6. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
2 I had 7 gallons of milk and I drank 3
8 4
gallons yesterday. How much do I have
left?
Subtract the following. Write your
answer in simplest form.
7 3
8
-
4
6

7. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
3
Emma is building a shelf to hold the two
boxes shown. What is the least width
she should make the shelf?
3 9
ft ft
4 10
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8. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
4 1
Chelsea saves 5 of her allowance
2
and spends of her allowance.
3
What fraction of her allowance
remains?
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9. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Extra Practice
5 7
6
+ 9
5 1
-
7 3
2 3
7
+ 5
2 7
-
3 12
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10. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Add Subt Fractions
Grade: «grade»
Subject: «subject»
Date: «date»
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11. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
1
5 7
6
+ 9
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12. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
2
5 1
-
7 3
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13. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
3
2 3
7
+ 5
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14. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
4
2 7
-
3 12
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15. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Before You Leave
Why do we need to rewrite
fractions so they have the same
denominator before we add or
subtract?
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16. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Homework
Homework Sheet
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17. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
AIM: Adding and Subtracting
Fractions and Mixed Numbers
Add the following. Write your answer in
simplest form.
2 4
3
+ 5
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18. Day 3 Adding and Subtracting Fractions.notebook September 10, 2012
Subtract the following. Write your
answer in simplest form.
1 3
5 - 2
4 5
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