Because raising to a power is a completely different operation than simple multiplication. 10100 is 10 followed by 100 zeros - while 10010 is 100 followed by only 10 zeros.
12.2
4.16 + 100 = 104.16
One tenth is ten times bigger than one hundredth. That is 1/10 = 10 x 1/100.
To round 98.82 to the nearest tenth, you need to look at the hundredth place, which is the second decimal place. Since the digit in the hundredth place is 8, which is equal to or greater than 5, you round up the digit in the tenths place. Therefore, 98.82 rounded to the nearest tenth is 98.9.
17.0
It depends on how many you have. One tenth is greater than one hundredth, but fifty hundredths is greater than two tenths.
It is already rounded to a greater extent than that.
after the decimal it is (from left to right) tenth, hundredth, thousandth etc.. if the thousandth is equal to or greater than five, you round the hundredth up. In this case you would get: 7856.43
Each one is ten times greater than the next.
19.89 would round to 19.9 to the nearest tenth because we look at the hundredth column and if it is greater than five we round the tenth number up 1.
The number is already rounded to a greater extent than either of those levels!
20.6
12.2
To round 6.875 to the nearest tenth, look at the digit in hundredth's place. If it is 5 or greater, round the digit in tenth's place to the next higher digit. If the digit in the hundredth's place is less than 5, do not change the digit in tenth's place. 6.875 rounded to the nearest tenth is 6.9.
4.16 + 100 = 104.16
0.048 rounded to the nearest tenth is 0.0, as the hundredth place digit is less than 5. When rounding to the nearest tenth, we look at the digit in the hundredth place (8 in this case) to determine whether to round up or down. Since 8 is greater than or equal to 5, we would round up to the nearest tenth, making the answer 0.1.
One tenth is ten times bigger than one hundredth. That is 1/10 = 10 x 1/100.