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Sixth Grade Challenging Math

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6-41)  Without multiplying all the following numbers, find out if the product of numbers 1 through 20 is an even or odd number.

1 x 2 x 3 x 4 x 5 x 6 .... x 20

 

6-42) Without multiplying all the following numbers, find out if the product of odd numbers 1 through 99 is an even or odd number.

1 x 3 x 5 x 7 .... x 99

 

6-43) Without adding all the following numbers, find out if the sum of the following odd numbers 1 through 19 is an even or an odd number.

1 + 3 + 5 + 7 .... + 19

 

6-44) Calculate and express your answer in  a fraction.

1/2 * 2/3 * 9/8 * 1/10 * 5/2

 


6-45) Calculate and express your answer in a fraction.

2 2/3 5/3 6/5 3/4

 

 

 

 

More challenging math problems for 6th grade:
1-5   6-10   11-15   16-20   21-25   26-30   31-35  36-40  41-45  46-50  51-60  61-70  71-80
   81-90

 

 

 
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