Fractions: Adding and Subtracting Like Denominators

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Presentation transcript:

Fractions: Adding and Subtracting Like Denominators

3 4 Parts of a Fraction = the number of parts = the total number of parts that equal a whole

Parts of a Fraction 3 = numerator 4 = denominator

Adding Like Denominators Only add the numerators 1/4 1/4 3 1 4 + = 4 4 4 1/4 1/4

Add these fractions 1/5 1/5 3 1 4 + = 1/5 5 5 5 1/5

Add these fractions 1/4 1/4 2 1 3 + = 4 4 4 1/4

Add these fractions 1 1 1 6 6 6 3 2 5 + = 6 6 6 1 1 6 6

Add these fractions 1 1 1 6 6 6 2 2 4 + = 6 6 6 1 6

Add these fractions 5 3 8 + = 12 12 12

Add these fractions 1 3 4 + = 10 10 10

Add these fractions 4 3 7 + = 4 4 9 9 9

Add these fractions 3 1 4 + = 5 5 8 8 8

Add these fractions 2 1 3 + 4 3 = 7 9 9 9

Subtracting Like Denominators Only subtract the numerators 1/4 1/4 4 1 3 - = 4 4 4 1/4 1/4

Subtract these fractions 8 5 3 - = 12 12 12

Subtract these fractions 7 3 4 - = 10 10 10

Subtract these fractions 5 3 2 - = 6 6 6