To round 415 to the nearest 10, we look at the digit in the tens place, which is 1. The digit to its right, 5, is greater than or equal to 5, so we round up. Therefore, 415 rounded to the nearest 10 is 420.
400
420
That would depend on what you were rounding it to. If rounding to the nearest whole number, then it does not need rounding. If rounding to the nearest ten, it would be 420. If rounding to the nearest hundred, it would be 400.
478.5
The nearest 10 to 340 is 340 itself. When determining the nearest 10, you are looking for the multiple of 10 that is closest to the given number. Since 340 is already a multiple of 10, it is the nearest 10 to itself.
420.
400
415 is already rounded to the nearest tenths place as well as to the units place.
10%off 415 = 415 - (0.10 x 415) = 373.5
10% of 415 is 41.500
10 + 3 + 412 - 10 = 415
400
420
415/27 = 15.370370370..., or 15 10/27.
It is: 2 and 83 when simplified
That would depend on what you were rounding it to. If rounding to the nearest whole number, then it does not need rounding. If rounding to the nearest ten, it would be 420. If rounding to the nearest hundred, it would be 400.
4.15 x 10^2