Basic Math Examples

Find the Mean 3 1/3-2 2/5
Step 1
Convert to an improper fraction.
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Step 1.1
A mixed number is an addition of its whole and fractional parts.
Step 1.2
Add and .
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Step 1.2.1
To write as a fraction with a common denominator, multiply by .
Step 1.2.2
Combine and .
Step 1.2.3
Combine the numerators over the common denominator.
Step 1.2.4
Simplify the numerator.
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Step 1.2.4.1
Multiply by .
Step 1.2.4.2
Add and .
Step 2
Convert to an improper fraction.
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Step 2.1
A mixed number is an addition of its whole and fractional parts.
Step 2.2
Add and .
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Step 2.2.1
To write as a fraction with a common denominator, multiply by .
Step 2.2.2
Combine and .
Step 2.2.3
Combine the numerators over the common denominator.
Step 2.2.4
Simplify the numerator.
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Step 2.2.4.1
Multiply by .
Step 2.2.4.2
Add and .
Step 3
To write as a fraction with a common denominator, multiply by .
Step 4
To write as a fraction with a common denominator, multiply by .
Step 5
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
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Step 5.1
Multiply by .
Step 5.2
Multiply by .
Step 5.3
Multiply by .
Step 5.4
Multiply by .
Step 6
Combine the numerators over the common denominator.
Step 7
Simplify the numerator.
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Step 7.1
Multiply by .
Step 7.2
Multiply by .
Step 7.3
Subtract from .
Step 8
The mean of a set of numbers is the sum divided by the number of terms.
Step 9
Divide by .
Step 10
Divide.
Step 11
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.