Event 4:Mental Math

7th/8th gradeMath Meet ‘11

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Example: PENCILS DOWN

(-8 + 5) + (6 x 6)

Write your answer tothe Example now.

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Event 4:Mental Math

7th/8th gradeMath Meet ‘11

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Problem 1: PENCILS DOWN

(17 - 6) + (7 x 4)

Write your answer toProblem 1 now.

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Problem 2: PENCILS DOWN

17 + 19 + 13 - 9 - 3 - 5

Write your answer toProblem 2 now.

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Problem 3: PENCILS DOWN

6(3 + 1) + 6(4 + 2) + 2(3 + 2)

Write your answer toProblem 3 now.

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Problem 4: PENCILS DOWN

         

                                 

√4    +   √1                                              

√9          √36

Write your answer toProblem 4 now.

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Problem 5: PENCILS DOWN

(17 + 18 + -8 + 5)______________________________________________ 

                  4 

Write your answer toProblem 5 now.

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Problem 6: PENCILS DOWN

 3  +  1  +  1  =  9_______          ______            _______           _______

    4      ?      8      8

Write your answer toProblem 6 now.

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Problem 7: PENCILS DOWN

 

       (1 - 8) + 2(? + 3) =  5

Write your answer toProblem 7 now.

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Problem 8: PENCILS DOWN

(1 + 2 + 3) + (2 + 3 + 4) + (3 + 4 + 5)

Write your answer toProblem 8 now.

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Problem 9: PENCILS DOWN

 

4 + 9 + 16 +15          20

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Problem 10: PENCILS DOWN

       23 + 32 + 22 + 31 + 21

          ___________________________________________

                           2

Write your answer toProblem 10 now.

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End of Event 4:Mental Math

7th/8th gradeMath Meet ‘11