Question

The volume of a barrel of oil is calculated as 257,166 cm³.

Answer 1

What is the digit at the hundred thousands place? It is 2. Is the digit to the right of it less than 5? No, 5 is 5. So replace the digits to the right of 2 with 0, and change the 2 to 3.
Answer: 300,000

Answer 2

Answer:

The nearest hundred thousand of 257,166 cm³ would be 300,000. Some hundred thousand near 257,166 cm³ would be 100,000; 200,000; 300,000; 400,000. And after you see those number, you would see 300,000 is the closet number to 257,166 and the second closest is 200,000.

Hope this help you :3