Transcript LT: 3A Use prime factorization to find the GCF between two

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
• 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)
• Put answer in numerator
• Keep the denominator
Example:
1½
2 x 1 = 2, 2 + 1 = 3
3/2
CONVERT TO IMPROPER FRACTION

2 3/16

6 2/5
cont. review box
Convert Improper Fraction to a Mixed Number
• Do long division
• Divide the numerator by the
Fraction is
denominator
division!
• Your answer is the “regular”
number
• The remainder is the numerator of the fraction, the
denominator stays the same
Example:
45/4
CONVERT TO MIXED NUMBER
 16/5
 9/2
ADDING & SUBTRACTING FRACTIONS WITH
LIKE DENOMINATORS
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?
ONE-STEP EQUATIONS - FRACTIONS
Example 1:
Example 2:
PRACTICE WITH PARTNER
Problem 1
Problem 2
PRACTICE ALONE