Question

the students in ms gonzales fith grade math class earned the following grades on their first test:
46 56 64 64 72 76 77 82 94 96 99
what was the mean of the grades? (round to the nearest whole number)

Answer 1

To calculate the mean of the grades, we need to follow these steps:

1. Add all the grades together.
2. Divide the sum by the number of grades.

Here are the grades:
46, 56, 64, 64, 72, 76, 77, 82, 94, 96, 99

**Step 1: Add the grades together.**

\[
46 + 56 + 64 + 64 + 72 + 76 + 77 + 82 + 94 + 96 + 99 = 46 + 56 = 102
\]
\[
102 + 64 = 166
\]
\[
166 + 64 = 230
\]
\[
230 + 72 = 302
\]
\[
302 + 76 = 378
\]
\[
378 + 77 = 455
\]
\[
455 + 82 = 537
\]
\[
537 + 94 = 631
\]
\[
631 + 96 = 727
\]
\[
727 + 99 = 826
\]

The total sum of the grades is **826**.

**Step 2: Count the number of grades.**
There are 11 grades.

**Step 3: Divide the sum by the number of grades.**

\[
\text{Mean} = \frac{826}{11} \approx 75.09
\]

Rounding to the nearest whole number, the mean of the grades is **75**.