Wednesday, March 7, 2012

Math Problems Feb. 9 2012

Problem #1 - 2/3/3A


N is a number such that

1 x 2 x 3 x 4 x 5 x 6 x 7 = 8 x 9 x N


What is the value of N?


Problem #2 - 2/3/3B


What number between 121 and 149 is exactly divisible by both 3 and 5?


Problem #3 - 2/3/3C


Rachel left home for school at 7:45 one morning. She returned home at 4:05 that afternoon. How many hours and minutes was she gone?
(The number of minutes in your answer must be less than 60)


Problem #4 - 2/3/3D


The area of a square is 36 square centimeters. A rectangle has the same perimteter as the square. The length of the rectangle is twice its width. What is the area of the rectangle is square cm?


Problem #5 - 2/4/4E


Maria writes the same whole number instead of '?' below and gets a true statement. Jon doeas the same as Maria and also gets a true statement. But Jon and Maria choose diferent numbers. What two numbers do they choose?


12 + ( ? x ? ) - ( 7 x ? ) = 0


Problem #6 - 2/5/5E


Alexandra gives 1/2 of her marbles to Tyler, who gives 2/3 of what he receives to Jan, who gives 3/4 of what she receives to Jerry. If each has a counting number of marbles, what is the fewest numbers of marbles that Alexandra could have started with?

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