Unit 2Review Flashcards

ALA: Pre-AlgebraUnit 2 Fractions

PUTTING IT ALL TOGETHER

ALA Unit 2 Fractions Review

⅚ ÷ ⅚

1

249249

1

Any number divided by itself = 1.

⅚ + 0

⅚

249 + 0 249 249

1

Adding zero to any number gives you the same number.

3 - 4 6 8

0

Any number minus itself always gives

you zero.

8 47 478

1 25 2 25

25/50 or ½

Multiplying any number by 1 gives

you the same number.

1 0 2 250

Multiplying any number by 0 gives

you 0.

DON’T YOU DARE!

25 0

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

fraction can’t be 0.

⅓ + 2 × ⅓

1

ORDER OF OPERATIONS

PLEASEEXCUSE MY DEARAUNT SALLY

⅚ ÷ 5 × 4

⅔

(½ + ¼)2

9/16

⅘ + ⅘(1 – ½)2

1

FAMOUS FRACTIONSAND DECIMALS

FRACTION DECIMAL

½ .5

FRACTION DECIMAL

¼ .25

FRACTION DECIMAL

¾ .75

FRACTION DECIMAL

1/10 .1

FRACTION DECIMAL

1/100 .01

Fraction RapWhen 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!

ADD, SUBTRACT, MULTIPLY, AND DIVIDE:

¼⅔

SUM

PRODUCT

DIFFERENCE

QUOTIENT

11/12 5/12

⅙ 8/3

ADD, SUBTRACT, MULTIPLY, AND DIVIDE:

1 ¼2⅔

SUM

PRODUCT

DIFFERENCE

QUOTIENT

47/12 17/12

10/3 32/15

You must have common denominators,You must have common denominators ,

TO ADD OR SUBTRACT,You must have common denominators!

Write 247 as a fraction:

247 1

Start with ½

DOUBLE IT:

HALVE IT:

SQUARE IT:

1

¼

¼

Start with ¾

DOUBLE IT:

HALVE IT:

SQUARE IT:

1 ½

⅜

9/16

What happens when you multiply reciprocals?

You always get 1!

Resources:

Picture on slide 2Working Together Teamwork Puzzle Concept by lumaxart is licensed under CC BY-SA 2.0

Image on slide 16Hangover by Martin Fuhrmann is available in the public domain under CC0 Public Domain

Picture on slide 20Smiling Grandma Fab Sunglasses White Hair by Stephen Depolo is licensed under CC BY 2.0

Picture on slide 24Red Carpet is available in the public domain

Picture on slide 252005 U.S. Half Dollar is available in the public domain

Picture on slide 26 and 272006 Quarter Proof is available in the public domain

Picture on slide 28Dime Obverse 13 is available in the public domain

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Unless otherwise noted this MoHealthWINs material by St. Louis Community College is licensed under a Creative Commons Attribution 4.0 International License.

Resources (Cont.):

Image on slide 292005 Penny Obv Unc D is available in the public domain

Clip Art on slide 33Birthday Cake is available in the public domain