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Subtraction with Regrouping: 80 − 39

Subtraction with Regrouping Calculator

What is 80 − 39?

Answer

80 − 39 =

41

With regrouping: 1 borrow — from the tens

80 − 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.
		7	+10
		8(was 8, now 7)	0 (was 0, now 10)
	−	3	9
		4	1

Column by column: 80 − 39

Ones: 0 is less than 9 — borrow 1 ten: tens 8 → 7; 10 − 9 = 1 — write 1.
Tens: after borrowing, 7; 7 − 3 = 4 — write 4.

80 − 39 = 41

Second check: 80 − 41 = 39

Similar examples to practise

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Related Calculations

41 + 39 = 80 - 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

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80 − 39 = 41 - Subtraction with Regrouping. 80 − 39 = 41. Subtraction with regrouping step by step: 1 borrow, every digit of the difference and an addition check.

https://calculat.io/en/number/long-subtraction/80--39/generated.jpg

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

Recalculate with different values ↑

FAQ

What is 80 − 39?

80 − 39 = 41

How do you check that 80 − 39 = 41?

Add the difference and the subtrahend: 41 + 39 = 80. Getting the minuend back means the difference is right.

How many times do you borrow in 80 − 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