Do Now 3/7/11 Do Now 3/7/11 Copy HW in your planner. Copy HW in your planner. Text p. 228, #10-28 evens, 38-44 evens Text p. 228, #10-28 evens, 38-44 evens Quiz sections 5.2 & 5.3 Wednesday Quiz sections 5.2 & 5.3 Wednesday Be ready to copy POTW #7. Be ready to copy POTW #7. Be ready to finish quiz on section 5.1 from Friday. Be ready to finish quiz on section 5.1 from Friday.
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Do Now 3/7/11 Copy HW in your planner. Copy HW in your planner. Text p. 228, #10-28 evens, 38-44 evens Quiz sections 5.2 & 5.3 Wednesday Be ready to.
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Do Now 3/7/11Do Now 3/7/11 Copy HW in your planner.Copy HW in your planner.
Text p. 228, #10-28 evens, 38-44 evensText p. 228, #10-28 evens, 38-44 evens Quiz sections 5.2 & 5.3 WednesdayQuiz sections 5.2 & 5.3 Wednesday
Be ready to copy POTW #7.Be ready to copy POTW #7.
Be ready to finish quiz on section 5.1 from Friday.Be ready to finish quiz on section 5.1 from Friday.
Objective
SWBAT add and subtract like fractions.
Section 5.2 “Adding and Subtracting Like Fractions”Section 5.2 “Adding and Subtracting Like Fractions”
Adding Fractions with Common Denominators
To ADD fractions with common denominators, add their numerators together. Simplify if necessary.
7
3
7
2
7
5
7
3
7
2
Add the numerators
c
ba
c
b
c
a
Section 5.2 “Adding and Subtracting Like Fractions”Section 5.2 “Adding and Subtracting Like Fractions”
Subtracting Fractions with Common Subtracting Fractions with Common DenominatorsDenominators
To SUBTRACT fractions with common denominators, subtract their numerators. Simplify if
necessary.
6
1
6
5
3
2
6
4
Subtract the numerators
c
ba
c
b
c
a
Try It Out!!Solve
8
7
8
2
8
5
18
1
18
5
18
6
5
2
5
3
4
1
12
3
12
2
12
5
15
5
5
2
5
3
8
2
8
5
12
2
12
5
18
5
18
6
Mixed Numbers to Improper FractionMixed Numbers to Improper Fraction
5
18
5
41Multiply
Multiply
AddAdd
8 x 5 = 408 x 5 = 40
40 + 1 = 4140 + 1 = 41
Try it out…Try it out…Mixed Numbers to Improper FractionMixed Numbers to Improper Fraction
5
23
5
17Multiply
Multiply
AddAdd
3 x 5 = 153 x 5 = 15
15 + 2 = 1715 + 2 = 17
6
57
6
47
Multiply
Multiply
AddAdd
7 x 6 = 427 x 6 = 42
42 + 5 = 4742 + 5 = 47
-
““Adding and Subtracting Mixed Numbers”Adding and Subtracting Mixed Numbers”