Subtraction with Regrouping: 86 − 17

Subtraction with Regrouping Calculator

What is 86 − 17?

Answer

86 − 17 =

69

With regrouping: 1 borrow — from the tens

86 − 17 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.
		7	+10
		8(was 8, now 7)	6 (was 6, now 16)
	−	1	7
		6	9

Column by column: 86 − 17

Ones: 6 is less than 7 — borrow 1 ten: tens 8 → 7; 16 − 7 = 9 — write 9.
Tens: after borrowing, 7; 7 − 1 = 6 — write 6.

86 − 17 = 69

Second check: 86 − 69 = 17

Similar examples to practise

Related Calculations

69 + 17 = 86 - Addition with Regrouping

See Also

Addition with Regrouping Calculator - Column addition step by step, with every carry
Long Division Calculator - Step-by-step long division with detailed explanation
Long Multiplication Calculator - Column multiplication with partial products, step by step
Subtracting Fractions Calculator - Subtract fractions, mixed numbers and whole numbers step by step

Recalculate with different values ↑

Column subtractions of 17

Example	Difference
56 − 17	39
58 − 17	41
62 − 17	45
64 − 17	47
69 − 17	52
71 − 17	54
75 − 17	58
80 − 17	63
82 − 17	65
84 − 17	67
86 − 17	69
88 − 17	71
91 − 17	74
93 − 17	76
95 − 17	78
100 − 17	83
102 − 17	85
106 − 17	89
109 − 17	92
111 − 17	94

FAQ

What is 86 − 17?

86 − 17 = 69

How do you check that 86 − 17 = 69?

Add the difference and the subtrahend: 69 + 17 = 86. Getting the minuend back means the difference is right.

How many times do you borrow in 86 − 17?

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