Subtraction with Regrouping: 1,132 − 485

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 1,132 − 485?

Answer

1,132 − 485 =
647

With regrouping: 3 borrows — from the tens, the hundreds and the thousands

1,132 − 485 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.
01012+10
1(was 1, now 0)1(was 1, now 10)3(was 3, now 12)2 (was 2, now 12)
−485
647

Column by column: 1,132 − 485

  • Ones: 2 is less than 5 — borrow 1 ten: tens 3 → 2; 12 − 5 = 7 — write 7.
  • Tens: after borrowing, 2; 2 is less than 8 — borrow 1 hundred: hundreds 1 → 0; 12 − 8 = 4 — write 4.
  • Hundreds: after borrowing, 0; 0 is less than 4 — borrow 1 thousand: thousands 1 → 0; 10 − 4 = 6 — write 6.
  • Thousands: after borrowing, 0 — a leading zero is not written.

1,132 − 485 = 647

Second check: 1,132 − 647 = 485

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Column subtractions of 485

ExampleDifference
1,127 − 485642
1,128 − 485643
1,129 − 485644
1,130 − 485645
1,131 − 485646
1,132 − 485647
1,133 − 485648
1,134 − 485649
1,135 − 485650
1,136 − 485651
1,137 − 485652

FAQ

What is 1,132 − 485?

1,132 − 485 = 647

How do you check that 1,132 − 485 = 647?

Add the difference and the subtrahend: 647 + 485 = 1,132. Getting the minuend back means the difference is right.

How many times do you borrow in 1,132 − 485?

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

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