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Fractions

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by

Peter Newby

on 28 February 2013

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Transcript of Fractions

Try Solving These Welcome to Your
Prezi Classroom Multiplying Fractions is as fun as adding fractions. Mixed Numbers What are Mixed Numbers?


How are they different from Improper Fractions? Applying what You Know Mr. Newby's Guide
to Solving
Fraction Problems Ready to Multiply? Adding &
Subtracting
Fractions!!! Improper Fractions Search the classroom for
the type of problem you need
to solve today. Are you down with the LCD? L
C
D What are Fractions? Part of A Whole 1 ___ 6 The closer you get to the whole, the larger the value of the fraction 5/6 = Estimation Tricks Is your fraction closer to... 0, 1/2, or 1 O 1/7 3/20 5/50

21/1000 1
-
2 3/6 5/11

3/7 12/20 1 WHOLE 19/20 4/5 12/15

6/7 34/38 Decimals-2
-Fractions Watch this
Khan Video Fractions You just Need to KNOW!!! 1
-
2 = 0.5 so does 3 5 - - 6 10 1
-
4 3
-
12 , , 6
-
24 = 0.25 Think of quarters when doing 1/4 and 3/4 equivalents. Fraction Basics and Tricks 4 3/4 = 19/4 owest
ommon
enominator 3 1
4 3 - + - both 4 and 3 are factors of 12. So we need to multiply 3/4 both by 3, and 1/3 both by 4. x 4

x 4 3 x

3 x 9 4 13
12 12 12 - + - = - or 1 1/12 Origins of Fractions Comes from the Latin word "Fractio" Fractio means to break Solve: 4 + 3 = 5 2
8 3 - - Solve: 7 - 5 = 1 5
8 6 - - So Now What? Now I want to know how you can apply these skills to solve problems.

Write your own problem on a sticky note that involves adding or subtracting mixed numbers with different denominators. Write your question neatly. Can you relate your question to your current 5th grade theme?

Bring them up to the board. In pairs, you will solve a problem that one of your classmates created. Good Luck! The only difference is... No Common
Denominator
Needed! To make Mr. Newby's Super Chili it requires 3/4 cup of his TOP SECRET ingredient: Coffee (shhh)
However, Mrs. Newby is sick of eating his chili every Sunday for the big game. So Mr. Newby has to cut his coffee by 1/2. How much coffee does he need? 1 2
2 5 - x = -
Full transcript