Answer:
100
Explanation:
When rounding to the nearest hundred we have to look at the equation and take it step by step
1st: Set it up. - 1-2-4
2nd: find the keywords. - Round to the nearest hundred, which in this case the first digit 1
3rd: Round it! - 124 = 1-2-4, so remove 24 because it's under 50 and you get 100
Thus that is why your answer is 100
Hope this Helps, and forgive me for the delay!