Column Subtraction: 78 − 15

Subtraction with Regrouping Calculator

What is 78 − 15?

Answer

78 − 15 =

63

No regrouping: each column is subtracted on its own

78 − 15 in a column. No borrowing.
		7	8
	−	1	5
		6	3

Column by column: 78 − 15

Ones: 8 − 5 = 3 — write 3.
Tens: 7 − 1 = 6 — write 6.

78 − 15 = 63

Second check: 78 − 63 = 15

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Related Calculations

63 + 15 = 78 - Column Addition

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 15

Example	Difference
43 − 15	28
49 − 15	34
51 − 15	36
54 − 15	39
56 − 15	41
60 − 15	45
62 − 15	47
67 − 15	52
69 − 15	54
73 − 15	58
78 − 15	63
80 − 15	65
82 − 15	67
84 − 15	69
86 − 15	71
89 − 15	74
91 − 15	76
93 − 15	78
98 − 15	83
100 − 15	85

FAQ

What is 78 − 15?

78 − 15 = 63

How do you check that 78 − 15 = 63?

Add the difference and the subtrahend: 63 + 15 = 78. Getting the minuend back means the difference is right.

How many times do you borrow in 78 − 15?

Not once: every top digit is at least as large as the digit below it.

See Also