When rounding 2140 to the nearest ten, we look at the digit in the tens place, which is 4. Since 4 is less than 5, we round down, making the tens digit 0. Therefore, 2140 rounded to the nearest ten is 2140.
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2000
2140 = 2x2x5x107
2145.0
6.6273 rounded to the nearest thousandths is 6.627 Rounded to the nearest hundredths, it is 6.63. Rounded to the nearest tenths, it it 6.6. Rounded to the nearest ones, it is 7.
16 is rounded to 20 if rounded to the ten's digit.