Subtraction with Regrouping: 170 − 34

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 170 − 34?

Answer

170 − 34 =
136

With regrouping: 1 borrow — from the tens

170 − 34 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.
6+10
1 7(was 7, now 6)0 (was 0, now 10)
−34
136

Column by column: 170 − 34

  • Ones: 0 is less than 4 — borrow 1 ten: tens 7 → 6; 10 − 4 = 6 — write 6.
  • Tens: after borrowing, 6; 6 − 3 = 3 — write 3.
  • Hundreds: nothing to subtract — write 1.

170 − 34 = 136

Second check: 170 − 136 = 34

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Recalculate with different values ↑

Column subtractions of 34

ExampleDifference
108 − 3474
110 − 3476
112 − 3478
117 − 3483
119 − 3485
123 − 3489
126 − 3492
128 − 3494
132 − 3498
139 − 34105
170 − 34136
206 − 34172
237 − 34203
273 − 34239
302 − 34268
341 − 34307
382 − 34348
410 − 34376
436 − 34402
487 − 34453

FAQ

What is 170 − 34?

170 − 34 = 136

How do you check that 170 − 34 = 136?

Add the difference and the subtrahend: 136 + 34 = 170. Getting the minuend back means the difference is right.

How many times do you borrow in 170 − 34?

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

See Also