Tuesday, October 1st Warm Up

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Presentation transcript:

Tuesday, October 1st Warm Up Please pick up a worksheet Complete side 3-8 This is assignment #17 We will go over it once everyone is done!

Adding/Subtracting Fraction Notes Assignment #20 Adding/Subtracting Fraction Notes

Vocabulary Like fractions: Fractions with the same denominator. Unlike fractions: Fractions with different denominators. Least Common Denominator (LCD): Smallest common denominator of two or more fractions.

Adding/Subtracting with Common Denominators: Like Fractions Step 1: Keep the denominator the same. Step 2: Add/Subtract the numerators. Step 3: Simplify your answer.

Examples

Warm Up:

Adding/Subtracting Fractions with Unlike Denominators Step 1: Find a common denominator. Step 2: Write equivalent fractions using that denominator. **If you change the denominator, you have to change the numerator too** Step 3: Add/Subtract the numerators. Step 4: Simplify

Examples

Word Problem A carpenter begins with a board that is inches thick. She removes of an inch from its thickness. How thick is the board now?

Discuss What needs to be the same before we can add or subtract fractions? What part of the fractions do we actually add or subtract when we add or subtract fractions?

Practice

Brain Pop Adding/ Subtracting

Practice 3-6