11/6/2013
Wednesday, 11/6
You Need:
BW: Writing improper fractions as
mixed numbers _5 questions
On your desk to be checked during BW:
Classwork from yesterday, mainly the 4 questions with different
denominators that you should have pictures for.
Math Notebook Table of Contents
BW: 11/6
Assignment#
41
42
43
44
45
46
Title
GCF and LCM
BEGIN 2nd 9 WEEKS
Comparing Fractions and Decimals
Simplifying Fractions
Bellwork 10/30 and 11/1
Practice & Quiz Quiz Trade
Drawing Fractions
/.
1 2
1. +
2 3
1 1
4. −
3 5
+
=
2 1
2. +
3 4
5 3
3. −
6 5
1
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/.
1 2
1. +
2 3
1 1
4. −
3 5
Like Denominators
Improper/Proper Fractions
2 1
2. +
3 4
5 3
3. −
6 5
Don’t copy YET
Don’t copy YET
What improper fraction represents the picture?
Don’t copy YET
Don’t copy YET
What improper fraction represents the picture?
2
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Don’t copy YET
Don’t copy YET
+
Don’t copy YET
Why did our denominator not
change?
+
=
COPY
The denominator represents the
SIZE of our pieces. If the size of the
pieces don’t change, our
denominator can’t change.
+
=
Add the
numerators.
3
11/6/2013
COPY
COPY
+
=
Add the
numerators...NOT
the denominators!
COPY
+
=
=
Add the
numerators...NOT
the denominators!
Don’t copy YET
Mixed Numbers
What mixed number represents the picture?
Don’t copy YET
Don’t copy YET
What mixed number represents the picture?
4
11/6/2013
Don’t copy YET
Don’t copy YET
+
Don’t copy YET
Don’t copy YET
COPY
COPY
+
=
+
=
Add the whole
numbers
5
11/6/2013
COPY
You Try! #1:
+
=
=
Add the whole
numbers then add
the numerators.
You Try!#2:
COPY
If it’s subtraction, turn it into an improper
fraction.
+
Ex:
COPY numbers, not the question.
Ex:
COPY numbers, not the question.
If we try to subtract the whole numbers then
subtract the numerators, what happens?
6
11/6/2013
Pg. 156 #10,15 and Pg. 160 #6-7
Pg. 156 #10,15 and Pg. 160 #6-7
4 problems, 6 minutes.
Pg. 156 #10,15 and Pg. 160 #6-7
COPY
Unlike Denominators
Copy the fractions only
We want to add
Copy the pictures too!
We want to add
… why can’t we?
7
11/6/2013
Don’t copy, just answer.
What should we do with the first circle?
Draw the lines in on your original circle.
So now we have…
Don’t copy, just listen
Draw the lines in on your original circle.
What should we do with the first circle?
Copy the fractions ONLY
So now we have…
Don’t copy, just listen
In numbers…
To add or subtract fractions, we have to find
a common denominator.
8
11/6/2013
Copy
1. If you can turn one denominator
into the other(x or ÷), do it!
1. If you can turn one denominator
into the other(x or ÷), do it!
Example 1:
COPY the numbers only
If you can’t…
2. Find the LCM/LCD
3. Multiply the DUA
COPY the numbers only
COPY
Rewrite your problem:
1. If you can turn one denominator
into the other(x or ÷), do it!
1. If you can turn one denominator
into the other(x or ÷), do it!
Example 1b:
7 1
−
8 2
COPY the numbers only
COPY the numbers only
1
=
2
8
1. If you can turn one denominator
into the other(x or ÷), do it!
9
11/6/2013
COPY
COPY
Rewrite your problem:
7 1 7 4
− = −
8 2 8 8
Rewrite your problem:
7 1 7 4
− = − =
8 2 8 8
COPY
Rewrite your problem:
7 1 7 4 3
− = − =
8 2 8 8 8
10