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Adding & Subtracting Fractions with Unlike Denominators

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Presentation on theme: "Adding & Subtracting Fractions with Unlike Denominators"— Presentation transcript:

1 Adding & Subtracting Fractions with Unlike Denominators
Monday 1/13 5.NF.1 Adding & Subtracting Fractions with Unlike Denominators Please turn off or silence your electronic devices and put them away

2 Notebooks Label first 10 pages, front page odd, back page even, in the upper or lower corner. (going to be labeled 1-20) **Glue** Syllabus on page labeled 3 **Glue**

3 Standards & Objectives
Page 1 4 5-11 4NF3 Add & subtract fractions with like denominators 5NF1 Add & subtract fractions with unlike denominators

4 Brain Pop! Add & Subtract Fractions

5 +/- fractions unlike denominators
Vocabulary +/- fractions unlike denominators Page 5 Top number in a fraction is the numerator, how many pieces we are dealing with The bottom number in a fraction is the denominator, how many pieces make up one whole When fractions share the same number on the bottom they have a common denominator To add & Subtract fractions with different denominators, you must find the common multiple/denominator

6 Adding & Subtracting Fractions with Unlike Denominators
Tuesday 1/14 5.NF.1 Adding & Subtracting Fractions with Unlike Denominators Please turn off or silence your electronic devices and put them away

7 Fraction is part of a whole
To add & subtract fractions with unlike denominators, convert to equivalent fractions with a common denominator, add the numerators, and keep the same common denominator. Lowest Common Multiple/Denominator: Smallest number that is a multiple of two or more numbers Multiple is the result of multiplying a number by an integer

8 +/- fractions unlike denominators
Page 7 Step 1: List the multiples of each denominator until you have a common denominator Step 2: convert each fraction to the equivalent fraction with the same denominator Step 3: add & subtract numerators, keep the denominator the same

9 Step 1 9: 9, 18, 27, 36 12: 12, 24, 36 Step 2 Step 3

10 Adding Fractions Convert each fraction to have a common denominator
Add numerators, keep the denominator the same Work on worksheet or on page 6

11 Adding & Subtracting Fractions with Unlike Denominators
Wednesday 1/15 5.NF.1 Adding & Subtracting Fractions with Unlike Denominators Please turn off or silence your electronic devices and put them away

12 Lost! FYI – Power outage Examine each problem. Is the number below it a common denominator for the two fractions? If so, color the square. The colored square will create a path to help Pieere find his teammates. Work on worksheet or on page 9 First two columns, We, last two you.

13 Adding & Subtracting Fractions with Unlike Denominators
Thursday 1/16 5.NF.1 Adding & Subtracting Fractions with Unlike Denominators Please turn off or silence your electronic devices and put them away

14 FACEing Math Lesson 15 Add and Subtract Fractions (FYI-Sub)
Show work on page 14-15 FACE in full color, 5 extra color points

15 Adding & Subtracting Fractions with Unlike Denominators
Friday 1/17 5.NF.1 Adding & Subtracting Fractions with Unlike Denominators Please turn off or silence your electronic devices and put them away

16 Reducing Fractions

17 Reducing Fractions Page 11 To simplify a fraction means to make the
fraction as small as possible Equivalent Fractions have the same value even though they may look different Factors are number you can multiply together to get another number Greatest Common Factor is the largest Number that divides evenly into two or more numbers

18 Step 1 list the factors for both
the numerator and the denominator Step 2 reduce the fraction by it’s greatest common factor Step 1 16: 1,16 2,8 4,4 24: 1,24 2,12 3,8 4,6 ÷ Step 2

19 High Speeds and Though Turns
Add and Subtract the fractions Reduce to the lowest terms, shade the flag that corresponds to your answer Show work on worksheet or on page 10


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