What are the smallest and largest whole numbers that round to 50 when rounded to the nearest ten?

Answer 1

50

Answer 2

The smallest whole number that rounds to 50 when rounded to the nearest ten is 45. When rounded to the nearest ten, 45 rounds up to 50. The largest whole number that rounds to 50 when rounded to the nearest ten is 54. When rounded to the nearest ten, 54 rounds down to 50.

Answer 3

Half of 10 is 5, therefore all numbers in the range:

50 - 5 ≤ the number < 50 + 5

that is:

45 ≤ the number < 55

round to 50 to the nearest 10.

So the smallest whole number is 45 and the largest is 54.