Well, honey, rounding 390 to the nearest ten is a piece of cake. You look at the digit in the tens place, which is a 9 in this case. Since 9 is closer to 10 than it is to 0, you round up to 400. Easy peasy lemon squeezy.
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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.
390 is exactly thirty-nine tens, with nothing left over. So there's no other ten
that's any closer to it than it already is. It's already rounded to tens.
To round 391 to the nearest ten, we look at the digit in the tens place, which is 9. Since 9 is greater than or equal to 5, we round up. So, 391 rounded to the nearest ten is 400.
390
390
round to the nearest ten thousandth 44.24862486
96 round to the nearest ten=100