Question

metric conversion practice / mastery

1. 16.23 mg = ___ μg 2. 151.4 l = ___ kl
2. 0.00072 kg = ___ g 4) 4.12 m = ___ cm
3. 170000 mm = ___ m 6) 0.000017 hl = ___ cl
4. 2631 cg = _____ μg 8) 45,000,000 nm =
5. 0.243 cl = ___ ml 10) 2823 m = ___ km
6. write the definition of a variable?
7. name steps of scientific method?

write answer in scientific notation

1. 23,000,000,000 = ____________________
2. 0.0006000004 = ____________________
3. metric unit for length?
4. metric unit for time?
5. metric unit for distance?
6. definition of matter?

Explanation:

Step1: Recall metric - conversion factors

1 mg = 1000 μg, 1 L = 0.001 kL, 1 kg = 1000 g, 1 m = 100 cm, 1 μL = 1000 cL, 1 mm = 0.001 m, 1 cg = 0.00001 kg, 1 cL = 10 mL, 1 m = 0.001 km, scientific - notation rules.

Step2: Solve 1)

16.23 mg = 16.23×1000 μg = 16230 μg.

Step3: Solve 2)

151.4 L=151.4×0.001 kL = 0.1514 kL.

Step4: Solve 3)

0.00072 kg = 0.00072×1000 g = 0.72 g.

Step5: Solve 4)

4.12 m = 4.12×100 cm = 412 cm.

Step6: Solve 5)

170000 mm = 170000×0.001 m = 170 m.

Step7: Solve 6)

0.000017 μL = 0.000017×1000 cL=0.017 cL.

Step8: Solve 7)

2631 cg = 2631×0.00001 kg = 0.02631 kg.

Step9: Solve 8)

45000000 nm is not completed in the question. Assuming convert to m, 1 nm = 10⁻⁹ m, so 45000000 nm = 45000000×10⁻⁹ m = 0.045 m.

Step10: Solve 9)

0.243 cL = 0.243×10 mL = 2.43 mL.

Step11: Solve 10)

2823 m = 2823×0.001 km = 2.823 km.

Step12: Solve 11)

A variable is a symbol (usually a letter) that represents an unknown value or a value that can change.

Step13: Solve 12)

The steps of the scientific method typically include: making an observation, forming a hypothesis, conducting an experiment, analyzing the data, and drawing a conclusion.

Step14: Solve 13)

23000000000 = 2.3×10¹⁰ in scientific notation.

Step15: Solve 14)

0.0006000004 = 6.000004×10⁻⁴ in scientific notation.

Step16: Solve 15)

The metric unit for length is the meter (m).

Step17: Solve 16)

The metric unit for time is the second (s).

Step18: Solve 17)

The metric unit for distance is the meter (m).

Step19: Solve 18)

Matter is anything that has mass and takes up space.

Answer:

1. 16230 μg
2. 0.1514 kL
3. 0.72 g
4. 412 cm
5. 170 m
6. 0.017 cL
7. 0.02631 kg
8. 0.045 m (assuming convert to m)
9. 2.43 mL
10. 2.823 km
11. A symbol representing an unknown or changing value
12. Observation, hypothesis, experiment, data - analysis, conclusion
13. 2.3×10¹⁰
14. 6.000004×10⁻⁴
15. Meter (m)
16. Second (s)
17. Meter (m)
18. Anything that has mass and takes up space