Make a tally chart for the number of students in the third-fourth-and fifth grade classes: 26,25,27,27,26,28,27

I don't understand how to find the answer.

the total number of students if there are nineteen in one class and thirteen in another

Make a tally chart for the number of students in the third fourth and fifth classes 26, 25, 27, 27, 26, 28, 27,

To create a tally chart for the number of students in the third, fourth, and fifth-grade classes, you need to follow these steps:

1. Start by drawing a vertical line on a piece of paper. This line will be the main line or stem for the tally chart.
2. Write the numbers 26, 25, 27, 27, 26, 28, and 27 next to the vertical line, representing the number of students in each class.
3. For each number, you will create a tally mark representing five students. Draw the first four tally marks diagonally across the line, starting from the bottom and moving upwards. After the fourth tally mark, make a diagonal slash across the first four marks to indicate the fifth student.
4. Repeat this process for each number, adding tally marks as needed. For example, if you have a number with two groups of five students, you will draw two sets of four tally marks before making a diagonal slash for the last student.
5. Once you have completed the tally marks for all the numbers, count the tally marks in groups of five to determine the total number of students in each class.
6. Finally, summarize your findings in a precise and organized manner, stating the number of students in each class based on the tally marks.

Here's an example of how the tally chart would look for the given numbers:

```
Students | Tally
------------------
26 | ||||
25 | ||||
27 | ||||/
27 | ||||/
26 | ||||
28 | |||||
27 | ||||/
```

In this example, the tally marks represent groups of five students each. So, for the third-grade class, there are four groups of five students (20) and one additional student, making a total of 26 students. Similarly, you can calculate the totals for the fourth and fifth-grade classes based on the tally marks.