Subtraction with Regrouping: 700 − 122

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 700 − 122?

Answer

700 − 122 =
578

With regrouping across a zero: 2 borrows — there are no tens to borrow from, so 1 hundred becomes 10 tens, and 1 ten goes to the ones

700 − 122 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.
69+10
7(was 7, now 6)0(was 0, now 9)0 (was 0, now 10)
−122
578

Column by column: 700 − 122

  • Ones: 0 is less than 2 — borrow 1 hundred across the zero: hundreds 7 → 6, tens 0 → 9; 10 − 2 = 8 — write 8.
  • Tens: after borrowing, 9; 9 − 2 = 7 — write 7.
  • Hundreds: after borrowing, 6; 6 − 1 = 5 — write 5.

700 − 122 = 578

Second check: 700 − 578 = 122

Similar examples to practise

Related Calculations

See Also

Recalculate with different values ↑

Column subtractions from 700

ExampleDifference
700 − 12688
700 − 23677
700 − 36664
700 − 47653
700 − 63637
700 − 71629
700 − 83617
700 − 94606
700 − 122578
700 − 136564
700 − 203497
700 − 215485
700 − 268432
700 − 298402
700 − 348352

FAQ

What is 700 − 122?

700 − 122 = 578

How do you check that 700 − 122 = 578?

Add the difference and the subtrahend: 578 + 122 = 700. Getting the minuend back means the difference is right.

How many times do you borrow in 700 − 122?

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

Why does 0 become 9 when borrowing in 700 − 122?

The zero has nothing to lend, so it first borrows 1 from its left neighbour and becomes 10; then it lends 1 to the column on its right and keeps 9.

See Also