Explain Your Strategy
Practice
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When solving a problem, you must start by choosing a strategy.
Can you explain WHY you chose
that strategy?

Answer each question.  Then explain why you chose that strategy.

 1.  Cindy is baking 4 dozen cookies.  Cindy needs 3 eggs for one dozen of cookies.  How many eggs will Cindy needs to 4 dozen cookies?


12 eggs

16 eggs


 

 2.  Lisa is sorting her winter mittens.  She has 9 pairs of mittens and has 1 extra mitten left over.  How many mittens does Lisa have?


18 mittens

19 mittens


 

 3.  Tom wakes up at 7:00 a.m.  He needs to be at school at 8:30 a.m.  How long does Tom have to get ready and get to school?


1.5 hours

1 hour


 

 4.  Kate has 2 quarters, 7 dimes, 2 nickels, and 4 pennies.  How much money does she have?


$1.24

$1.34


 

 5.  Scott has 3,178 trading cards in his collection.  He gives 989 trading cards to his friend.  How many cards does Scott have left?


2,189

2,089


 

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