Question

Marcus is comparing the half-mile run times of 5 runners at a tournament. Runners with an approximate time of 3.5 minutes will advance to the next level. Before recording

the results, he rounds each time to the nearest tenth
Which times round to 3.5? Choose all the correct answers.
3.45 minutes
3.57 minutes
3.525 minutes
3.509 minutes
3.482 minutes

Answer 1

To find the times that round to 3.5, we need to apply the rule of rounding to the nearest tenth. After applying the rule to each time, the times that round to 3.5 are 3.525 minutes, 3.509 minutes, and 3.482 minutes.

Step-by-step explanation:

To determine which times round to 3.5, we need to consider how rounding to the nearest tenth works. If the digit in the hundredth place is less than 5, we round down. If the digit in the hundredth place is 5 or greater, we round up. Let's apply this to each time:

• 3.45 minutes: The digit in the hundredth place is 4, which is less than 5. So, it rounds down to 3.4.
• 3.57 minutes: The digit in the hundredth place is 7, which is 5 or greater. So, it rounds up to 3.6.
• 3.525 minutes: The digit in the hundredth place is 5, which is 5 or greater. So, it rounds up to 3.5.
• 3.509 minutes: The digit in the hundredth place is 9, which is 5 or greater. So, it rounds up to 3.5.
• 3.482 minutes: The digit in the hundredth place is 8, which is 5 or greater. So, it rounds up to 3.5.

So, the times that round to 3.5 are 3.525 minutes, 3.509 minutes, and 3.482 minutes.