This image contains a list of numbers with instructions to round each to a specified number of significant figures. Let's solve each problem:

1) 8272 (to 1 sf)

• Answer: 8000

2) 5448 (to 3 sf)

• Answer: 5450

3) 97 (to 1 sf)

• Answer: 100

4) 2.9 (to 1 sf)

• Answer: 3

5) 4.31 (to 2 sf)

• Answer: 4.3

6) 7.4 (to 1 sf)

• Answer: 7

7) 18.1 (to 2 sf)

• Answer: 18

8) 29.3 (to 1 sf)

• Answer: 30

9) 42.84 (to 3 sf)

• Answer: 42.8

10) 73.6 (to 1 sf)

• Answer: 70

11) 8.3445 (to 2 sf)

• Answer: 8.3

12) 82.7841 (to 1 sf)

• Answer: 80

13) 125.555 (to 3 sf)

• Answer: 126

14) 9.7299 (to 1 sf)

• Answer: 10

15) 9.9566 (to 2 sf)

• Answer: 10

Would you like any further details or clarifications on the rounding rules?

Here are 5 related questions to expand on this:

1. How do you round numbers when they are exactly halfway?
2. What is the difference between significant figures and decimal places?
3. Why are significant figures important in scientific calculations?
4. How do you round very small numbers (e.g., 0.00567) to significant figures?
5. Can rounding errors accumulate in long calculations, and how can they be minimized?

Tip: When rounding numbers to significant figures, always start counting from the first non-zero digit, regardless of its position in the number.