How do I convert 87 grams and 28 milligrams into kilograms?

To convert grams and milligrams to kilograms, we need to remember the following unit conversions:

• 1 kilogram (kg) = 1,000 grams (g)
• 1 kilogram (kg) = 1,000,000 milligrams (mg)

Now, let’s break down the conversion:

1. **Convert grams to kilograms:**
      87 grams = 87 / 1,000 = 0.087 kilograms.

2. **Convert milligrams to kilograms:**
      28 milligrams = 28 / 1,000,000 = 0.000028 kilograms.

3. **Add the two components together:**
      Total in kilograms = 0.087 kg + 0.000028 kg = 0.087028 kg.

So, when you convert 87 grams and 28 milligrams to kilograms, you get approximately 0.087028 kilograms.