Question
Estimating Decimals
Explain how to estimate the sum of the distances ran in the three months to the nearest kilometer.
A 2-column table with 3 rows titled Total Distance Andrea Ran (kilometers). Column 1 has entries March, April, May. Column 2 has entries 48.7, 31.2, 35.66.
Explain how to estimate the sum of the distances ran in the three months to the nearest kilometer.
A 2-column table with 3 rows titled Total Distance Andrea Ran (kilometers). Column 1 has entries March, April, May. Column 2 has entries 48.7, 31.2, 35.66.
Answers
GPT-4o mini
To estimate the sum of the distances Andrea ran in the three months (March, April, and May) to the nearest kilometer, we can follow these steps:
1. **Round Each Distance to the Nearest Kilometer**: Begin by rounding each distance in kilometers to the nearest whole number.
- For March: 48.7 kilometers rounds to 49 kilometers.
- For April: 31.2 kilometers rounds to 31 kilometers.
- For May: 35.66 kilometers rounds to 36 kilometers.
2. **List the Rounded Distances**:
- March: 49 km
- April: 31 km
- May: 36 km
3. **Add the Rounded Distances Together**: Now, add the rounded distances:
- \( 49 + 31 + 36 \)
4. **Calculate the Sum**:
- First, add March and April: \( 49 + 31 = 80 \).
- Then add May: \( 80 + 36 = 116 \).
5. **Final Estimate**: The estimated total distance that Andrea ran over these three months is approximately **116 kilometers**.
By rounding each month's distance to the nearest kilometer before adding, we simplify the calculation and still get a close estimate of the total distance.
1. **Round Each Distance to the Nearest Kilometer**: Begin by rounding each distance in kilometers to the nearest whole number.
- For March: 48.7 kilometers rounds to 49 kilometers.
- For April: 31.2 kilometers rounds to 31 kilometers.
- For May: 35.66 kilometers rounds to 36 kilometers.
2. **List the Rounded Distances**:
- March: 49 km
- April: 31 km
- May: 36 km
3. **Add the Rounded Distances Together**: Now, add the rounded distances:
- \( 49 + 31 + 36 \)
4. **Calculate the Sum**:
- First, add March and April: \( 49 + 31 = 80 \).
- Then add May: \( 80 + 36 = 116 \).
5. **Final Estimate**: The estimated total distance that Andrea ran over these three months is approximately **116 kilometers**.
By rounding each month's distance to the nearest kilometer before adding, we simplify the calculation and still get a close estimate of the total distance.