Subtraction with Regrouping: 991 − 389

Subtraction with Regrouping Calculator

What is 991 − 389?

Answer

991 − 389 =

602

With regrouping: 1 borrow — from the tens

991 − 389 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	9(was 9, now 8)	1 (was 1, now 11)
	−	3	8	9
		6	0	2

Column by column: 991 − 389

Ones: 1 is less than 9 — borrow 1 ten: tens 9 → 8; 11 − 9 = 2 — write 2.
Tens: after borrowing, 8; 8 − 8 = 0 — write 0.
Hundreds: 9 − 3 = 6 — write 6.

991 − 389 = 602

Second check: 991 − 602 = 389

Similar examples to practise

Related Calculations

602 + 389 = 991 - 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 389

Example	Difference
986 − 389	597
987 − 389	598
988 − 389	599
989 − 389	600
990 − 389	601
991 − 389	602
992 − 389	603
993 − 389	604
994 − 389	605
995 − 389	606
996 − 389	607

FAQ

What is 991 − 389?

991 − 389 = 602

How do you check that 991 − 389 = 602?

Add the difference and the subtrahend: 602 + 389 = 991. Getting the minuend back means the difference is right.

How many times do you borrow in 991 − 389?

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