Dean's science class measured the volume of gases using balloons. They found that there were 7.34 liters of gas in the first balloon, 0.76 liters of gas in the second balloon, and 20.74 liters of gas in the third balloon. How many liters of gas did Dean's class measure in all?

To find the total amount of gas Dean's class measured, we need to add the volumes of gas in the three balloons:

\[
7.34 \, \text{liters} + 0.76 \, \text{liters} + 20.74 \, \text{liters}
\]

Adding these together:

\[
7.34 + 0.76 + 20.74 = 28.84 \, \text{liters}
\]

Thus, Dean's class measured **28.84 liters** of gas in total.

Would you like more details or have any questions?

Here are 5 related questions to expand on the topic:
1. How would you convert liters to milliliters for each balloon's volume?
2. What is the average volume of gas per balloon?
3. If a fourth balloon had 15.62 liters of gas, what would the new total be?
4. How much more gas was in the third balloon compared to the first?
5. What is the difference in volume between the second and third balloons?

**Tip:** When adding decimals, it helps to line up the decimal points to ensure accuracy in your calculations.

Find the total volume of gas in three balloons by adding the decimal values 7.34 liters, 0.76 liters, and 20.74 liters. This problem involves basic arithmetic and is suitable for students in Grades 4-6.

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