. Mr. Johnson buys 5 bottles of lemonade for the school picnic. He buys four 28-ounce bottles and one 64-ounce bottle. Using rounding to the nearest ten, about how much lemonade does Mr. Johnson buy in all? 180 ounces 190 ounces 90 ounces 360 ounces Done
The Correct Answer and Explanation is:
Correct Answer: 180 ounces
Explanation
Mr. Johnson buys five bottles of lemonade:
- Four bottles are 28 ounces each
- One bottle is 64 ounces
Let’s break this down step-by-step.
Step 1: Multiply the 28-ounce bottles
There are 4 bottles of 28 ounces: 4×28=112 ounces4 \times 28 = 112 \text{ ounces}
Step 2: Add the 64-ounce bottle
Now add the 64-ounce bottle to the total: 112+64=176 ounces112 + 64 = 176 \text{ ounces}
Step 3: Round to the nearest ten
We now have a total of 176 ounces. The question asks us to round to the nearest ten.
To round 176 to the nearest ten:
- Look at the ones digit, which is 6.
- Since 6 is 5 or more, we round up.
176→180 ounces176 \rightarrow \boxed{180 \text{ ounces}}
Step 4: Choose the closest estimate
Looking at the answer choices:
- 180 ounces ✅
- 190 ounces
- 90 ounces
- 360 ounces
The correct rounded estimate is 180 ounces.
Why Rounding Matters
Rounding helps us make quick, reasonable estimates in real-life situations. Mr. Johnson may not need the exact number of ounces at the moment—he may just want to know about how much lemonade he has. Estimating with rounding gives a useful approximation while saving time and effort.
Conclusion
By multiplying the ounces of the smaller bottles, adding the larger one, and rounding the total to the nearest ten, we find that Mr. Johnson bought about 180 ounces of lemonade in total. So, the correct answer is: 180 ounces\boxed{180 \text{ ounces}}
