Sixth Grade Challenging Math -------------------------------------------------------------------------
6-81) A cubic shaped fish tank is
40 inches tall. One quarter of the tank is filled with water.
If a piece of cubic shaped metal 30 inches in height is placed in the
fish tank, what is the water level in the fish tank?
6-82) A cubic shaped fish tank is 30
inches tall. One third of the tank is filled with water.
If a piece of cubic shaped metal 20 inches in height is placed in the
fish tank, what is the water level in the fish tank?
6-83)
A clock runs one minute faster every hour. How many minutes faster does it run in
a week?
6-84)
Pick three different positive integers equal or less than 10, so that the
product of the 3 integers is the largest possible.
6-85)
Find the largest possible integer less than 100 that is divisible by 6 and 5.
6-86) X = 1/a + 1/b. What is
value of X when a = 7, b = 8? Answer can be in the form of a fraction.
6-87) Y = (m+n)/(m-n). What is
the value of Y when m = 8, n =11? Answer can be in the form of a fraction.
6-88)
How many positive whole numbers less than 100 are divisible by 3, but not by 2?
6-89)
There are three positive integers in a row, and their sum is 24. What is their
product?
6-90) What is 50% of -30% of 54?
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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