boogydavis3452 boogydavis3452 23-01-2024 Mathematics contestada Silvio completed this addition problem: 142 + 93 = 235. There is a 1 above the 1 in the hundreds column. Why did Silvio place a number above the 1 in 142? a) Carry-over b) Borrowing c) Regrouping d) Subtraction