A baby weighs 7.7 kg at birth. Calculate the baby’s weigh in pounds and ounces
The correct answer and explanation is:
To convert a baby’s weight from kilograms (kg) to pounds (lb) and ounces (oz):
Step 1: Conversion Factors
- 1 kilogram = 2.20462 pounds
- 1 pound = 16 ounces
Step 2: Convert 7.7 kg to pounds
7.7 kg×2.20462=16.9756 pounds7.7 \text{ kg} \times 2.20462 = 16.9756 \text{ pounds}
This is approximately 16 pounds and 0.9756 of a pound.
Step 3: Convert decimal pounds to ounces
0.9756×16=15.6096 ounces0.9756 \times 16 = 15.6096 \text{ ounces}
This is approximately 16 pounds and 15.6 ounces.
To round:
- Final answer = 16 pounds and 15.6 ounces, or roughly 17 pounds if rounding up.
✅ Final Answer: 16 pounds and 15.6 ounces
🧠 Explanation (300 words)
Weight is commonly measured in kilograms in most parts of the world, but in countries like the United States, weight is usually expressed in pounds and ounces. To compare or record a baby’s weight in a globally understood format, conversion between metric and imperial units is often necessary.
The baby in this question weighs 7.7 kilograms. Using the standard conversion factor of 1 kilogram = 2.20462 pounds, multiplying 7.7 kg by 2.20462 gives us approximately 16.9756 pounds.
Since 1 pound contains 16 ounces, we take the decimal part of the result (0.9756) and multiply it by 16. This gives approximately 15.6 ounces. So, the baby weighs 16 pounds and 15.6 ounces.
This level of detail is useful in medical records, international travel documents, and baby growth charts, which sometimes present weight in both units. It’s also important for parents or caregivers in countries using different systems to understand this conversion.
In summary, converting between metric and imperial units involves multiplying by standard factors. Understanding this helps bridge communication gaps across countries and ensures that health-related measurements are accurately understood no matter the system used.