9. Round off 707 A. 8000 B. 7700 C. 6000 D. 7000

To round off the number 707 to the nearest thousand, we look at the hundreds place, which is 7. Since 707 is closer to 700 than it is to 800, we round it down. So, the correct rounded-off value is 7000. Now, let's make it fun! Did you know rounding numbers has been around since ancient civilizations? The Babylonians and Egyptians used rounding to simplify large calculations, making math a lot easier in their trades and sciences. It’s like giving numbers a haircut, trimming off the unnecessary bits to make them more manageable!