Subtraction with Regrouping: 133 − 39

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 133 − 39?

Answer

133 − 39 =
94

With regrouping: 2 borrows — from the tens and the hundreds

133 − 39 in a column. Above the columns: the values after borrowing — a crossed-out digit is replaced by the number above it; +10 marks a column that received a borrowed ten.
012+10
1(was 1, now 0)3(was 3, now 12)3 (was 3, now 13)
−39
94

Column by column: 133 − 39

  • Ones: 3 is less than 9 — borrow 1 ten: tens 3 → 2; 13 − 9 = 4 — write 4.
  • Tens: after borrowing, 2; 2 is less than 3 — borrow 1 hundred: hundreds 1 → 0; 12 − 3 = 9 — write 9.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

133 − 39 = 94

Second check: 133 − 94 = 39

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See Also

FAQ

What is 133 − 39?

133 − 39 = 94

How do you check that 133 − 39 = 94?

Add the difference and the subtrahend: 94 + 39 = 133. Getting the minuend back means the difference is right.

How many times do you borrow in 133 − 39?

2 borrows: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.