Subtraction with Regrouping: 270 − 98

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 270 − 98?

Answer

270 − 98 =
172

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

270 − 98 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.
116+10
2(was 2, now 1)7(was 7, now 16)0 (was 0, now 10)
−98
172

Column by column: 270 − 98

  • Ones: 0 is less than 8 — borrow 1 ten: tens 7 → 6; 10 − 8 = 2 — write 2.
  • Tens: after borrowing, 6; 6 is less than 9 — borrow 1 hundred: hundreds 2 → 1; 16 − 9 = 7 — write 7.
  • Hundreds: after borrowing, 1; nothing to subtract — write 1.

270 − 98 = 172

Second check: 270 − 172 = 98

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See Also

FAQ

What is 270 − 98?

270 − 98 = 172

How do you check that 270 − 98 = 172?

Add the difference and the subtrahend: 172 + 98 = 270. Getting the minuend back means the difference is right.

How many times do you borrow in 270 − 98?

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