Homework 10/20/14

Click on the link to practice your math skills
http://www.shodor.org/interactivate/activities/EstimatorFour/


Assignment

Name                                                      #                                           10/20/14
Math                                                                                                     Ms Edwards
                                      Online Math Homework

Kyle estimates the cost of the items that he has in his shopping cart so that he will not go over his amount of money. He claims there are 2 ways that he can estimate the total cost of his items but Only one is an estimate that will work.

 

a)      The costs of 4 items are listed. Round each to the nearest ten and add.

$463                   $171                  $223               $142

Show your work below. Round to the nearest 10 and add.

 

 

 

 

 

 

b)      Will rounding to the nearest ten and adding let you know if you have enough money? Why or why not?

 

 

 

c)       Kyle claims rounding to the nearest hundred provides a more helpful estimate. He is correct. Why?