A baby weighed eight pounds and three ounces at birth. If the baby weighed twelve pounds and five ounces at three months of age, how much weight did the baby gain?

The baby gained 4 lbs and 2 oz.

Thanks

12 lbs. - 8 lbs. = 4 lbs.

5 oz. - 3 oz = 2 oz.

Right.

hey those Babies need to grow like we need to grow.

To find out how much weight the baby gained, you need to calculate the difference between the weight at three months of age and the weight at birth.

First, convert the weight measurements to a consistent unit.

- Convert eight pounds and three ounces to ounces:
- Eight pounds = 8 x 16 (since there are 16 ounces in a pound) = 128 ounces
- Three ounces = 3 ounces
- Total weight at birth = 128 + 3 = 131 ounces

- Convert twelve pounds and five ounces to ounces:
- Twelve pounds = 12 x 16 = 192 ounces
- Five ounces = 5 ounces
- Total weight at three months = 192 + 5 = 197 ounces

Now, subtract the weight at birth from the weight at three months to find the weight gained:
- Weight gained = Total weight at three months - Total weight at birth
- Weight gained = 197 ounces - 131 ounces = 66 ounces

Therefore, the baby gained 66 ounces in weight over the first three months.