What is 3/10 minus 8/10?
Here we will show you how to calculate 3/10 minus 8/10. We will give you the answer in fraction form and in decimal form.
We label the numbers in 3/10 minus 8/10 like this:
3/10 - 8/10 = A/B - C/D
We will use a formula that does not require you to find the lowest common denominator to find the solution. The formula is:
(AD - BC) / BD
When we fill in 3/10 minus 8/10 into the formula above, we get:
(3x10 - 10x8) / 10x10
(30 - 80) / 100
-50/100
Thus, the answer to 3/10 minus 8/10 (simplified if necessary) in fraction form is as follows:
-1/2
To get the answer to 3/10 minus 8/10 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-50 / 100 = -0.5
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.