Subtraction with Regrouping: 421 − 45

Subtraction with Regrouping Calculator

What is 421 − 45?

Answer

421 − 45 =

376

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

421 − 45 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.
		3	11	+10
		4(was 4, now 3)	2(was 2, now 11)	1 (was 1, now 11)
	−		4	5
		3	7	6

Column by column: 421 − 45

Ones: 1 is less than 5 — borrow 1 ten: tens 2 → 1; 11 − 5 = 6 — write 6.
Tens: after borrowing, 1; 1 is less than 4 — borrow 1 hundred: hundreds 4 → 3; 11 − 4 = 7 — write 7.
Hundreds: after borrowing, 3; nothing to subtract — write 3.

421 − 45 = 376

Second check: 421 − 376 = 45

Similar examples to practise

Related Calculations

376 + 45 = 421 - 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 45

Example	Difference
130 − 45	85
134 − 45	89
137 − 45	92
139 − 45	94
143 − 45	98
150 − 45	105
181 − 45	136
217 − 45	172
248 − 45	203
284 − 45	239
313 − 45	268
352 − 45	307
393 − 45	348
421 − 45	376
447 − 45	402
498 − 45	453
530 − 45	485
581 − 45	536
623 − 45	578
692 − 45	647

FAQ

What is 421 − 45?

421 − 45 = 376

How do you check that 421 − 45 = 376?

Add the difference and the subtrahend: 376 + 45 = 421. Getting the minuend back means the difference is right.

How many times do you borrow in 421 − 45?

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