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
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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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