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# Name ways we can categorize people in the classroom Example: gender, eye color…etc. - PowerPoint PPT Presentation

Name ways we can categorize people in the classroom Example: gender, eye color…etc. . What does it mean to categorize? Are there rules?. Simplify. 2/3 + 4/9 = 4/10 – 2/5 = . LT 2.1 A One-sTep Equations - Fractions. Review Box Mixed Number 1 ½

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• Example: gender, eye color…etc.

Are there rules?

2/3 + 4/9 =

4/10 – 2/5 =

LT 2.1 A One-sTep Equations - Fractions

• Review Box

• Mixed Number

• 1 ½

• It combines a regular number with a fraction

• Improper Fraction

• 3/2

• Fractions where the top number (numerator) is bigger than the bottom number (denominator)

• Cont. Review Box

• Convert Mixed Number to an Improper Fraction

• Multiply the denominator by the “regular” number

• Add the numerator to step 1 or the multiplication (denominator x “regular” number)

• Keep the denominator

• Example:

• 1 ½ 2 x 1 = 2, 2 + 1 = 3 3/2

• 2 3/16

• 6 2/5

• cont. review box

• Convert Improper Fraction to a Mixed Number

• Do long division

• Divide the numerator by the

• denominator

• number

• The remainder is the numerator of the fraction, the denominator stays the same

• Example:

• 45/4

Fraction is division!

• 16/5

• 9/2

• You ONLY add/subtract the numerators

• The denominators stays the same

Adding & Subtracting Fractions with unlike denominators

• You must have “common” (the same) denominators.

• Once you have the same denominator, you can add/subtract the fractions.

• You ONLY add/subtract the numerators

• The denominators stays the same

How Can you Find the common denominator?How Do you change a fraction to have a new denominator?

Example 1:

Example 2:

Problem 1

Problem 2