Subtraction with Regrouping: 991 − 427

Subtraction with Regrouping Calculator

What is 991 − 427?

Answer

991 − 427 =

564

With regrouping: 1 borrow — from the tens

991 − 427 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)
	−	4	2	7
		5	6	4

Column by column: 991 − 427

Ones: 1 is less than 7 — borrow 1 ten: tens 9 → 8; 11 − 7 = 4 — write 4.
Tens: after borrowing, 8; 8 − 2 = 6 — write 6.
Hundreds: 9 − 4 = 5 — write 5.

991 − 427 = 564

Second check: 991 − 564 = 427

Similar examples to practise

Related Calculations

564 + 427 = 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 427

Example	Difference
986 − 427	559
987 − 427	560
988 − 427	561
989 − 427	562
990 − 427	563
991 − 427	564
992 − 427	565
993 − 427	566
994 − 427	567
995 − 427	568
996 − 427	569

FAQ

What is 991 − 427?

991 − 427 = 564

How do you check that 991 − 427 = 564?

Add the difference and the subtrahend: 564 + 427 = 991. Getting the minuend back means the difference is right.

How many times do you borrow in 991 − 427?

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