The nearest hundred number to 217 is 200. When rounding to the nearest hundred, we look at the digit in the tens place, which is 1 in this case. Since 1 is less than 5, we round down to the nearest hundred, which is 200.
100
The nearest 100 to 217 is 200.
0
200
0
Zero. 467, 398, 217 is less than 501,000,000 and therefore can't be rounded up.
To round 217 to the nearest ten, you look at the digit in the ones place, which is 7. Since 7 is 5 or greater, you round up the tens digit (1) by one. Therefore, 217 rounded to the nearest ten is 220.
268% = 268/100 = 217/25
% decrease = = 7.83%% decrease = |original value - new value|/original value * 100%= |217 - 200|/217 * 100%= 12/217 * 100%= 0.0783 * 100%= 7.83%
Rounded to two decimal places, sqrt(217) = ±14.73
220
Converting a number to a percent is easy; just multiply by 100: 2.17 x 100 = 217%