Subtraction with Regrouping: 172 − 74

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 172 − 74?

Answer

172 − 74 =
98

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

172 − 74 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.
016+10
1(was 1, now 0)7(was 7, now 16)2 (was 2, now 12)
−74
98

Column by column: 172 − 74

  • Ones: 2 is less than 4 — borrow 1 ten: tens 7 → 6; 12 − 4 = 8 — write 8.
  • Tens: after borrowing, 6; 6 is less than 7 — borrow 1 hundred: hundreds 1 → 0; 16 − 7 = 9 — write 9.
  • Hundreds: after borrowing, 0 — a leading zero is not written.

172 − 74 = 98

Second check: 172 − 98 = 74

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Column subtractions of 74

ExampleDifference
148 − 7474
150 − 7476
152 − 7478
157 − 7483
159 − 7485
163 − 7489
166 − 7492
168 − 7494
172 − 7498
179 − 74105
210 − 74136
246 − 74172
277 − 74203
313 − 74239
342 − 74268
381 − 74307
400 − 74326
422 − 74348
450 − 74376
476 − 74402

FAQ

What is 172 − 74?

172 − 74 = 98

How do you check that 172 − 74 = 98?

Add the difference and the subtrahend: 98 + 74 = 172. Getting the minuend back means the difference is right.

How many times do you borrow in 172 − 74?

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

See Also