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Unit 2 Review Flashcards Unit 2 Review Flashcards ALA: Pre-Algebra Unit 2 Fractions

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PUTTING IT ALL TOGETHER ALA Unit 2 Fractions Review

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⅚ ÷ ⅚ 1

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249 1

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Any number divided by itself = 1.

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⅚ + 0 ⅚

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249 + 0 249 249 1

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Adding zero to any number gives you the same number.

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3 - 4 6 8 0

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Any number minus itself always gives you zero.

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8 47 47 8

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1 25 2 25 25/50 o r ½

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Multiplying any number by 1 gives you the same number.

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1 0 2 25 0

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Multiplying any number by 0 gives you 0.

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DON’T YOU DARE!

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25 0 undefined

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You can’t divide by 0. The denominator of a fraction can’t be 0.

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⅓ + 2 × ⅓ 1

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ORDER OF OPERATIONS PLEASE EXCUSE MY DEAR AUNT SALLY

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⅚ ÷ 5 × 4 ⅔

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(½ + ¼) 2 9/16

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⅘ + ⅘ (1 – ½) 2 1

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FAMOUS FRACTIONS AND DECIMALS

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FRACTIONDECIMAL ½.5

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FRACTIONDECIMAL ¼.25

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FRACTIONDECIMAL ¾.75

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FRACTIONDECIMAL 1/10.1

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FRACTIONDECIMAL 1/100.01

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Fraction Rap When you’re adding up or taking away fractions, don’t be a hater. Bottom number’s got to be the same… COMMON DENOMINATOR! Multiply fractions, no big problem… TOP TIMES TOP AND BOTTOM TIMES BOTTOM Dividing fractions, easy as pie FLIP THE SECOND AND MULTIPLY!

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ADD, SUBTRACT, MULTIPLY, AND DIVIDE: ¼⅔ SUM PRODUCT DIFFERENCE QUOTIENT 11/125/12 ⅙ 8/3

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ADD, SUBTRACT, MULTIPLY, AND DIVIDE: 1 ¼2⅔ SUM PRODUCT DIFFERENCE QUOTIENT 47/1217/12 10/3 32/15

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You must have common denominators, You must have common denominators, TO ADD OR SUBTRACT, You must have common denominators!

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Write 247 as a fraction: 247 1

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Start with ½ DOUBLE IT: HALVE IT: SQUARE IT: 1 ¼ ¼

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Start with ¾ DOUBLE IT: HALVE IT: SQUARE IT: 1 ½ ⅜ 9/16

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What happens when you multiply reciprocals? You always get 1!

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Resources: Picture on slide 2 Working Together Teamwork Puzzle Concept by lumaxart is licensed under CC BY-SA 2.0 Working Together Teamwork Puzzle ConceptlumaxartCC BY-SA 2.0 Image on slide 16 HangoverHangover by Martin Fuhrmann is available in the public domain under CC0 Public DomainMartin FuhrmannCC0 Public Domain Picture on slide 20 Smiling Grandma Fab Sunglasses White HairSmiling Grandma Fab Sunglasses White Hair by Stephen Depolo is licensed under CC BY 2.0Stephen DepoloCC BY 2.0 Picture on slide 24 Red CarpetRed Carpet is available in the public domain Picture on slide 25 2005 U.S. Half Dollar 2005 U.S. Half Dollar is available in the public domain Picture on slide 26 and 27 2006 Quarter Proof2006 Quarter Proof is available in the public domain Picture on slide 28 Dime Obverse 13Dime Obverse 13 is available in the public domain

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MoHealthWINs This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership. Unless otherwise noted this MoHealthWINs material by St. Louis Community College is licensed under a Creative Commons Attribution 4.0 International License.St. Louis Community CollegeCreative Commons Attribution 4.0 International License Resources (Cont.): Image on slide 29 2005 Penny Obv Unc D 2005 Penny Obv Unc D is available in the public domain Clip Art on slide 33 Birthday CakeBirthday Cake is available in the public domain

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