What is 910 - 123

Answer: 910 - 123 = 787

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Subtraction using Regrouping or Borrowing

  • Step 1: Arrange the numbers 910, 123 to align them properly in respective columns for ones, tens, hundreds, and Thousands… stacking them vertically.
  • Step 2: Begin by subtracting the digits in the one's place. If the bottom digit is greater than the top digit, borrow 1 from the tens column which will be combined to the number at the one's place.
  • Step 3: After giving 1 to the one's place, the number at the ten's place will be reduced by one number. Next, subtract the numbers at the one's place.
  • Step 4: We apply step 2 to the remaining digits in two-digit and larger numbers. As and when we borrow, we subtract the numbers simultaneously. Finally, we get the answer as 787

The following animation demonstrates the Regrouping/Borrowing method,

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O T H 10 10 undefined 0 8 0 1 9 3 2 1 - 7 8 7 ©AskMathGuru

Each step is animated so you can see exactly how the solution is built — from writing the problem down to arriving at the final answer. This is not just an answer — it's a complete visual explanation.

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