Basic Math Examples

Find the Mean 5 , 775÷77
55 , 775÷77775÷77
Step 1
Rewrite the division as a fraction.
5,775775,77577
Step 2
The mean of a set of numbers is the sum divided by the number of terms.
5+7757725+775772
Step 3
Simplify the numerator.
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Step 3.1
To write 55 as a fraction with a common denominator, multiply by 77777777.
57777+77577257777+775772
Step 3.2
Combine 55 and 77777777.
57777+77577257777+775772
Step 3.3
Combine the numerators over the common denominator.
577+775772577+775772
Step 3.4
Simplify the numerator.
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Step 3.4.1
Multiply 55 by 7777.
385+775772385+775772
Step 3.4.2
Add 385385 and 775775.
11607721160772
11607721160772
11607721160772
Step 4
Multiply the numerator by the reciprocal of the denominator.
1160771211607712
Step 5
Cancel the common factor of 22.
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Step 5.1
Factor 22 out of 11601160.
2(580)77122(580)7712
Step 5.2
Cancel the common factor.
25807712
Step 5.3
Rewrite the expression.
58077
58077
Step 6
Divide.
7.532467
Step 7
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.
7.5
 [x2  12  π  xdx ]