To express the number 55,100 in two significant figures, we need to consider the first two non-zero digits and round accordingly.

1. The number 55,100 has the first two significant digits as "5" and "5".
2. To round 55,100 to two significant figures, we look at the third digit, which is "1". Since "1" is less than 5, we round down.

Thus, 55,100 rounded to two significant figures is **55,000**.

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Here are 5 related questions to expand on this topic:
1. How do you round numbers to three significant figures?
2. What is the number 0.00543 in two significant figures?
3. How does significant figures rounding differ from decimal places rounding?
4. Why are significant figures important in scientific calculations?
5. How would you round 123,456 to two significant figures?

**Tip:** When rounding to significant figures, always consider the digits' importance and position to maintain precision in your calculations.

Learn how to round the number 55,100 to two significant figures with a step-by-step explanation. Understand the importance of significant figures in scientific calculations and precision in rounding numbers. Suitable for high school students and anyone interested in mathematical precision.

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