Subtraction with Regrouping: 91 − 39

Subtraction with Regrouping Calculator

What is 91 − 39?

Answer

91 − 39 =

52

With regrouping: 1 borrow — from the tens

91 − 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.
		8	+10
		9(was 9, now 8)	1 (was 1, now 11)
	−	3	9
		5	2

Column by column: 91 − 39

Ones: 1 is less than 9 — borrow 1 ten: tens 9 → 8; 11 − 9 = 2 — write 2.
Tens: after borrowing, 8; 8 − 3 = 5 — write 5.

91 − 39 = 52

Second check: 91 − 52 = 39

Similar examples to practise

Related Calculations

52 + 39 = 91 - 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 39

Example	Difference
78 − 39	39
80 − 39	41
84 − 39	45
86 − 39	47
91 − 39	52
93 − 39	54
97 − 39	58
102 − 39	63
104 − 39	65
106 − 39	67
108 − 39	69
110 − 39	71
113 − 39	74
115 − 39	76
117 − 39	78
122 − 39	83
124 − 39	85
128 − 39	89
131 − 39	92
133 − 39	94

FAQ

What is 91 − 39?

91 − 39 = 52

How do you check that 91 − 39 = 52?

Add the difference and the subtrahend: 52 + 39 = 91. Getting the minuend back means the difference is right.

How many times do you borrow in 91 − 39?

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