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Unformatted text preview: 54 Adding and Subtracting Like
Fractions Objective: Add and subtract fractions
with like denominators. 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3 a = 22.7 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b b = 32.6 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4) 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4) c = 3.7 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4)
Simplify each expression.
4. 7.4n – 9.3n 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4)
Simplify each expression.
4. 7.4n – 9.3n 1.9n 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4)
Simplify each expression.
4. 7.4n – 9.3n
5. 6.3m + 4 – 1.1m 5Minute Check
Solve each equation.
1. a = 6.4 + 16.3
2. 96.34 – 63.74 = b
3. c = 5.3 + (5.6) – (3.4)
Simplify each expression.
4. 7.4n – 9.3n
5. 6.3m + 4 – 1.1m 5.2m + 4 54 Adding and Subtracting Like
Fractions
Adding and Subtracting Fractions
with Like Denominators
For fractions a/c and b/c, where c ≠ 0:
1. a/c + b/c = (a + b)/c and
2. a/c – b/c = (a  b)/c. 54 Adding and Subtracting Like
Fractions
Example
Solve each equation.
a. m = 3/8 + 7/8 54 Adding and Subtracting Like
Fractions
Example
Solve each equation.
a. m = 3/8 + 7/8
b. n = 12/10  14/10 54 Adding and Subtracting Like
Fractions
Example
Solve each equation.
a. m = 3/8 + 7/8
b. n = 12/10  14/10
c. q = 43/8 – 2 7/8 54 Adding and Subtracting Like
Fractions
Connection:
Simplify
31/8n + 45/8n – 61/8n – (107/8n) 54 Adding and Subtracting Like
Fractions
Assignment: 12  34 even, 36  48 all
Starting on page: 242 ...
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 Fall '08
 Staff
 Algebra, Fractions, PreAlgebra, 5Minute Check

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