2. Estimate the solution to this problem: You have \( 7 \frac{1}{2} \) L of punch. Each glass holds about \( \frac{3}{10} \mathrm{~L} \) About how many glasses could you fill?

To estimate how many glasses you can fill, first convert \( 7 \frac{1}{2} \) L into an improper fraction or a decimal. This gives you \( 7.5 \) L. Next, divide \( 7.5 \) L by \( \frac{3}{10} \) L per glass. To make the math easier, think of \( 7.5 \) as \( 75 \) tenths. Now the equation becomes \( 75 \div 3 = 25 \). So, you can fill approximately 25 glasses of punch—cheers to that! Now, keep in mind this is an estimation—sometimes our punches don’t pour perfectly, and there may be a tad left over. If you're being extra careful with the pouring, you might end up with just a bit more or less. Just remember to keep the punch bowl well stocked for your thirsty friends!