958+258

A mixed number is an addition of its whole and fractional parts.

9+58+258

Add 9 and 58.

To write 9 as a fraction with a common denominator, multiply by 88.

9⋅88+58+258

Combine 9 and 88.

9⋅88+58+258

Combine the numerators over the common denominator.

9⋅8+58+258

Simplify the numerator.

Multiply 9 by 8.

72+58+258

Add 72 and 5.

778+258

778+258

778+258

778+258

A mixed number is an addition of its whole and fractional parts.

778+2+58

Add 2 and 58.

To write 2 as a fraction with a common denominator, multiply by 88.

778+2⋅88+58

Combine 2 and 88.

778+2⋅88+58

Combine the numerators over the common denominator.

778+2⋅8+58

Simplify the numerator.

Multiply 2 by 8.

778+16+58

Add 16 and 5.

778+218

778+218

778+218

778+218

Combine the numerators over the common denominator.

77+218

Add 77 and 21.

988

Factor 2 out of 98.

2(49)8

Cancel the common factors.

Factor 2 out of 8.

2⋅492⋅4

Cancel the common factor.

2⋅492⋅4

Rewrite the expression.

494

494

494

The mean of a set of numbers is the sum divided by the number of terms.

4941

Divide 494 by 1.

494

Divide.

12.25

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.

12.3

Find the Mean (Arithmetic) 9 5/8+2 5/8