This subtracting game will really help you sharpen your basic mathematics skills.
Basically, you have 60 seconds to see how many exercises you can get correctly in 60 seconds
You should use any means necessay to get the answer, such as mental math, paper and pencils.
However, I strongly recommend that you do not use a calculator!
Keep in mind also that the asnwer can be negative!
Here is my guideline to verify how well you are doing:
and 1-7 points in 60 seconds: Very well, keep up!
and 7-15 points in 60 seconds: good!
and more than 15 points in 60 seconds: Expert!
and 1-4 points in 60 seconds: Very well, keep up!
and 4-8 points in 60 seconds : Good!
and more than 8 points in 60 seconds: Expert!
and 1-2 points in 60 seconds: Very well, keep up!
and 2-4 points in 60 seconds : Good!
and more than 4 points in 60 seconds: Expert!
Jul 20, 17 10:41 PM
A water tank is emptied at a constant rate. Initially, 36,000 gallons of water were in the tank. A the end of five hours, 16,000 gallons remained. How
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