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Let's solve the problem in the image step by step:

We are given the number 7148, and we need to:

**(a) Round to three significant digits:**

- The first three digits of 7148 are 714.
- The next digit (4th digit) is 8, which is greater than or equal to 5, so we round the last significant digit (4) up by 1.
- Therefore, rounding 7148 to three significant digits results in **7150**.

**(b) Round to two significant digits:**

- The first two digits of 7148 are 71.
- The next digit (3rd digit) is 4, which is less than 5, so we leave the last significant digit unchanged.
- Therefore, rounding 7148 to two significant digits results in **7100**.

Would you like more details on the rounding process or have any further questions?

Here are five related questions for practice:
1. Round 8427 to three significant digits.
2. Round 52981 to two significant digits.
3. What is the difference between significant figures and decimal places?
4. How do you round a number like 1506 to two significant digits?
5. Why is rounding important in scientific calculations?

**Tip:** When rounding, always look at the next digit after the last significant figure you're interested in. If it is 5 or higher, round up; otherwise, round down.

Round the given approximate number (a) to three significant digits and (b) to two significant digits. Number: 7148

Learn how to round the number 7148 to both three and two significant digits. This problem covers fundamental mathematical concepts like rounding and significant figures. Ideal for students in Grades 5-7.

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