reduce the following ratios: 18 to 21 12 : 32 9 to 24 5 35
TRANSCRIPT
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Reduce the following ratios:
18 to 21
12 : 32
9 to 24
5
35
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Total number of students in class:______________
Total number of boys:______ Total number of girls:________
Students wearing glasses: _______
Total number of students with blonde hair:___ brown:___ blk:___red:___
Number of students born in AZ:______
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Unit Rate - a ratio that has a denominator of one.
Examples: cost for one pound
pages read in one hour
cups that can fit on one shelf
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Write the unit rate:
$30 for six books
____ for one book
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Write the unit rate:
Read 80 pages in 2 hours
_______ pages in one hour
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Write the unit rate:
50 books on 2 shelves
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Write the unit rate:
24 points in 3 games
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Write the unit rate:
A 17 minute telephone call from Boston to Chicago costs $2.38.
What is the cost per minute?
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Better Buy - The CHEAPER of the two unit rates…(the lowest amount).
Example: 2 cokes for $1.00 ($.50 each)
4 cokes for $1.75 ($.44 each)
4 cokes for $1.75 is cheaper so it is the better buy.
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Find the better buy:
• $ 80 for 5 calculators
• $264 for 24 calculators
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Find the better buy:
• $6.20 for 20 liters
• $8.75 for 25 liters
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Find the better buy:
• 7 pounds for $12.67
• $21.69 for 9 pounds
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Find the better buy:
• $5.10 for 34 pens
• $3.06 for 18 pens
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Find the better buy:
• $ 442 for 26 staplers
• $38 for 2 staplers
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Find the better buy:
An eight ounce can of tomatoes costs $1.14. A twelve ounce can costs $1.75. Which can of tomatoes has the better unit price?
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Find the better buy:
Sam bought 36 calendars for $540. Tara bought 7 calendars for $91. Who got the better buy?
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Find the better buy:
Mrs. Riaz needs to buy some meat to make spaghetti. Should she buy 3 pounds for $8.43 or $10.28 for 4 pounds of meat?
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Find the better buy:
Rita is buying coffee for a party. She could buy 7 pounds for $12.67 or 9 pounds for $17.46. Which one is the better buy?