Sometimes you have to explain
your thinking as you
solve a problem.


 

Read each problem.  Choose an answer and read the explanation.

 1. Sam bought 4 tennis ball  
    containers.
    Each container holds 3 balls.
    How many balls did Sam buy?


9 tennis balls

12 tennis balls


 

 2. Matt has $5. If he doubles the
    amount of money he has each
    day, how much money will he have
    after 4 days?


$40

$20


 

 3. Bob helps his uncle each 
    Saturday from 8:00 A.M. to
    11:00 A.M.  How many hours does
    he help his uncle?


2 hours

3 hours


 

 4. Kelly has 4 notebooks.  She has
    twice as many pencils as she has
    notebooks.  How many pencils
    does Kelly have?


2 pencils

8 pencils


 

 5. Three friends want to share 9
     cookies equally.  How many
     cookies will each of them get?


3 cookies

2 cookies


 

 

Remember:

    Explain your thinking when solving a problem.

Click on the book to review the lesson.

 
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