Use each digit 3,7,1,5 once to write a number that rounds to the number given. 1.2,000 2.3,500 3.6,000 4. 7,320

2,000 = 1,573

3,500 = 3,517

6,000 = ?

7,320 = ?

I'll be glad to check your last two answers.

7135

To write a number using each digit 3, 7, 1, and 5 once, we need to consider the place value of each digit in the given numbers.

1. To round to 2,000, we know that the number is between 1,500 and 2,499. Since we need to use all the digits without repeating, the only option is 1,753.

2. To round to 3,500, we know that the number is between 3,250 and 3,749. The only option to use all the digits without repeating is 3,715.

3. To round to 6,000, we know that the number is between 5,500 and 6,499. The only option to use all the digits without repeating is 6,371.

4. To round to 7,320, we know that the number is between 7,295 and 7,345. The only option to use all the digits without repeating is 7,315.

Therefore, the numbers that round to the given numbers using each digit 3, 7, 1, and 5 once are:
1.2,000: 1,753
2.3,500: 3,715
3.6,000: 6,371
4.7,320: 7,315