Subtraction with Regrouping: 640 − 187

Subtraction with Regrouping Calculator

What is 640 − 187?

Answer

640 − 187 =

453

With regrouping: 2 borrows — from the tens and the hundreds

640 − 187 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.
		5	13	+10
		6(was 6, now 5)	4(was 4, now 13)	0 (was 0, now 10)
	−	1	8	7
		4	5	3

Column by column: 640 − 187

Ones: 0 is less than 7 — borrow 1 ten: tens 4 → 3; 10 − 7 = 3 — write 3.
Tens: after borrowing, 3; 3 is less than 8 — borrow 1 hundred: hundreds 6 → 5; 13 − 8 = 5 — write 5.
Hundreds: after borrowing, 5; 5 − 1 = 4 — write 4.

640 − 187 = 453

Second check: 640 − 453 = 187

Similar examples to practise

Related Calculations

453 + 187 = 640 - 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 187

Example	Difference
455 − 187	268
478 − 187	291
494 − 187	307
512 − 187	325
535 − 187	348
541 − 187	354
563 − 187	376
576 − 187	389
589 − 187	402
614 − 187	427
640 − 187	453
655 − 187	468
672 − 187	485
706 − 187	519
723 − 187	536
751 − 187	564
765 − 187	578
789 − 187	602
834 − 187	647
870 − 187	683

FAQ

What is 640 − 187?

640 − 187 = 453

How do you check that 640 − 187 = 453?

Add the difference and the subtrahend: 453 + 187 = 640. Getting the minuend back means the difference is right.

How many times do you borrow in 640 − 187?

2 borrows: each time the top digit was smaller than the one below it, 1 was borrowed from the column on the left.

See Also