This document is a teacher's notebook for a lesson on adding and subtracting mixed numbers. It includes the aims of the lesson, warm-up questions, examples of adding and subtracting mixed numbers with step-by-step workings, additional practice problems, and a homework assignment. The lesson explains how to convert mixed numbers to improper fractions before adding or subtracting.

1. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
AIM: Adding and Subtracting
Mixed Numbers
Do Now
1.) Complete the following decimal operation.
2.88 - 2.4
2.) Evaluate the following using the order of operations.
9 - 12 ÷ 3 + 2
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2. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
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3. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Blog
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4. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
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5. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Anticipatory Set
How do you convert a mixed number to
an improper fraction?
2
45
Why?
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6. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
1 I am training to run a 10 kilometer race.
1
One day I ran 4
kilometers and the
3
4
next day I ran 5 7 kilometers. How
many kilometers did I run combined?
Add the following. Write your answer in
simplest form.
1 4
4
3
+5 7
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7. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
2 My dog is 5 1 years old and my cat is 2 3
4 5
years younger. How old is my cat?
Subtract the following. Write your
answer in simplest form.
1 3
5
4
- 2 5
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8. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
3
You purchased a 2X4 piece of lumber
that is 8 feet long. If you cut a piece
that is 6 5 feet, how long is the piece
8
that is left over?
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9. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
4 Suppose a car's gas tank has a
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capacity of 11 10 gallons of gasoline.
3
It contains 8 4 gallons of gasoline
right now. How much more is
needed to fill the tank.
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10. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Extra Practice
5 1
8 6
-2 3
3 2
6 5
-1 3
2 5
3 3
+2 6
5
11 - 5 6
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11. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Add Subt Mixed
Grade: «grade»
Subject: «subject»
Date: «date»
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12. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
1
5 1
8 6
-2 3
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13. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
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3 2
6 5
-1 3
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14. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
3
2 5
3 3
+2 6
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15. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
4
5
11 - 5 6
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16. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Before You Leave
How were the procedures from
today different than last year?
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17. Day 4 Adding and Subtracting Mixed Numbers.notebook September 11, 2012
Homework
Homework Sheet
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