1. Do Now 3/8/11 Take out HW from last night. Copy HW in your planner.
Text p. 228, #10-28 evens, evens
Copy HW in your planner.
Text p. 234, #12-30 evens, #46-50 evens
Quiz sections Thursday
In your journal, find the least common multiple for the numbers below.
12, 16
12, 14
6, 10

2. Homework Text p. 228, #10-28 evens, 38-44 evens
10) 1 2/5
12) -1 1/9
14) 1/3
16) -5/11
18) -1 1/2
20) 14 1/5
22) 5 3/11
24) -5 1/4
26) -1/7
28) 4 1/3 cups
38) 1 5/9
40) -1
42) -2 3/31
44) 2 ft, 8 1/2 in

3. Objective
SWBAT add and subtract unlike fractions.

4. Section 5.2 “Adding and Subtracting Like Fractions”
Adding Fractions with Common Denominators
To ADD fractions with common denominators, add their numerators together.
Add the numerators

5. Section 5.2 “Adding and Subtracting Like Fractions”
Subtracting Fractions with Common Denominators
To SUBTRACT fractions with common denominators, subtract their numerators.
Subtract the numerators

6. Fractions with Different Denominators
Section 5.3 “Adding and Subtracting Unlike Fractions”
Fractions with Different Denominators
To ADD or SUBTRACT fractions with different denominators follow these steps:
1. Rewrite the fractions using a common denominator.
2. Add or subtract the numerators.
What is the common
denominator?
5: 5, 10, 15, 20, 25, 30, 35, 40
7: 7, 14, 21, 28, 35, 42

7. Try It Out!! Solve Don’t forget your integer rules. “Opp-Opp”
-7 + (-3) = -10

8. Try It Out!! Solve Don’t forget your integer rules. “Opp-Opp”
-16 + (-2) = -18

9. “Adding and Subtracting Mixed Numbers”
Mixed Numbers with Different Denominators
To ADD & SUBTRACT mixed numbers do the following:
1. Write the fractions as improper fractions
2. Write fractions using the LCD.
3. Add or subtract the numerators
4. Simplify if necessary

10. Try It Out Improper fractions Write fractions using LCD. Simplify
Don’t forget your integer rules.
“Opp-Opp”
34 + (-11) = 23
Simplify

11. Try It Out!! Improper fractions Don’t forget your integer rules.
“Opp-Opp”
(-94) = -217
Write fractions using LCD.
Simplify

12. Homework
Text p. 234, #12-30 evens, #46-50 evens

13. Homework Punchline worksheets #72 & #73
“Why Does the President Put
Vegetables in His Blender?”
HE IS HOPING FOR WHIRLED PEAS
“How Could Goldilocks and The Big
Bad Wolf Be in the Same House?”
IT WAS A TWO STORY HOUSE

14. Homework 2) 26 / 63 2) -4/5 2) -86 / 1 4) -17 / 36 4) 1 3/43
Practice worksheet
5.1 B evens
Practice worksheet
5.2 B evens
Practice worksheet
5.3 B evens
2) 26 / 63
4) -17 / 36
6) -1 23/60
8) 19 / 35
10) 1 2/15
12) -8/15
14) 1 19/45
16) 23/40
18) -2 31/50
20) -10/33
22) -5 41/48
24) 2 23/48
26) 43x / 24
28) -36x / 35
30) 11/35
2) -4/5
4) 1 3/43
6) 1/25
8) -21/40
10) -1 1/7
12) -11 5/9
14) 4 3/5
16) -5 5/8
18) 5x / 7
20) –x
22) 1 / 12x
24) 3 / x
2) -86 / 1
4) -109 / 12
6) -555 / 1
8) 67 / 14
10) -0.27
12) 8.15
14) -7.25
16)
18) 1.5
20)
22) 1/25
24) 14 1/200
26) 16/99
28) 3 23/30