39 tens.
3900/10=390
39 tens is 390.
To round 389 to the tens place, we look at the digit in the ones place, which is 9. Since 9 is greater than or equal to 5, we round up the tens place. Therefore, 389 rounded to the tens place is 390.
390
39 tens.
3900/10=390
39 tens is 390.
392 to the nearest tens = 390
To round 389 to the tens place, we look at the digit in the ones place, which is 9. Since 9 is greater than or equal to 5, we round up the tens place. Therefore, 389 rounded to the tens place is 390.
394 to the nearest tens place = 390
391 rounded to the nearest tens place is 390
390
390
To round 390 to the nearest ten, you look at the digit in the tens place, which is 9. Since 9 is greater than 5, you round up. Therefore, 390 rounded to the nearest ten is 400.
To round 386 to the nearest 10, you look at the digit in the tens place, which is 8. Since 8 is greater than or equal to 5, you would round up to the next multiple of 10. Therefore, 386 rounded to the nearest 10 is 390.
399 rounded to the nearest hundred is 400. 399 rounded to the nearest tens is also 400.