3. Add 0.0025 kg, 1750 mg, 2.25 g, and 825,000 mg, and express the answer in grams.

To solve this, we need to convert all units to **grams** before adding them together.

- \( 0.0025 \, \text{kg} = 0.0025 \times 1000 = 2.5 \, \text{g} \)
- \( 1750 \, \text{mg} = 1750 \div 1000 = 1.75 \, \text{g} \)
- \( 2.25 \, \text{g} \) (already in grams)
- \( 825,000 \, \text{mg} = 825,000 \div 1000 = 825 \, \text{g} \)

Now, add all the values in grams:

\[
2.5 \, \text{g} + 1.75 \, \text{g} + 2.25 \, \text{g} + 825 \, \text{g} = 831.5 \, \text{g}
\]

Thus, the total is **831.5 grams**.

Would you like more details or have any questions? Here are some related questions you can explore:

1. How do you convert between different units of mass?
2. What is the difference between kilograms, grams, and milligrams?
3. How would you handle a similar problem with additional units like micrograms or nanograms?
4. Why is it important to ensure units are the same when performing addition?
5. How does the conversion between metric units compare to that of imperial units?

**Tip:** Always ensure all units are the same before performing calculations in problems involving different measurements.

Add 0.0025 kg, 1750 mg, 2.25 g, and 825,000 mg, and express the answer in grams.

Learn how to add different units of mass such as kilograms, milligrams, and grams by converting them to the same unit. This problem shows a step-by-step guide to solve an example involving 0.0025 kg, 1750 mg, 2.25 g, and 825,000 mg. Suitable for Grades 6-8 students.

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