Subtraction with Regrouping: 990,122 − 2,468

Subtraction with Regrouping Calculator
Minuend
Subtrahend

What is 990,122 − 2,468?

Answer

990,122 − 2,468 =
987,654

With regrouping across a zero: 4 borrows — there are no thousands to borrow from, so 1 ten thousand becomes 10 thousands, and 1 thousand goes to the hundreds

990,122 − 2,468 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.
891011+10
9 9(was 9, now 8)0(was 0, now 9)1(was 1, now 10)2(was 2, now 11)2 (was 2, now 12)
−2468
987654

Column by column: 990,122 − 2,468

  • Ones: 2 is less than 8 — borrow 1 ten: tens 2 → 1; 12 − 8 = 4 — write 4.
  • Tens: after borrowing, 1; 1 is less than 6 — borrow 1 hundred: hundreds 1 → 0; 11 − 6 = 5 — write 5.
  • Hundreds: after borrowing, 0; 0 is less than 4 — borrow 1 ten thousand across the zero: ten thousands 9 → 8, thousands 0 → 9; 10 − 4 = 6 — write 6.
  • Thousands: after borrowing, 9; 9 − 2 = 7 — write 7.
  • Ten thousands: after borrowing, 8; nothing to subtract — write 8.
  • Hundred thousands: nothing to subtract — write 9.

990,122 − 2,468 = 987,654

Second check: 990,122 − 987,654 = 2,468

Related Calculations

See Also

Recalculate with different values ↑

Column subtractions of 2,468

ExampleDifference
990,117 − 2,468987,649
990,118 − 2,468987,650
990,119 − 2,468987,651
990,120 − 2,468987,652
990,121 − 2,468987,653
990,122 − 2,468987,654
990,123 − 2,468987,655
990,124 − 2,468987,656
990,125 − 2,468987,657
990,126 − 2,468987,658
990,127 − 2,468987,659

FAQ

What is 990,122 − 2,468?

990,122 − 2,468 = 987,654

How do you check that 990,122 − 2,468 = 987,654?

Add the difference and the subtrahend: 987,654 + 2,468 = 990,122. Getting the minuend back means the difference is right.

How many times do you borrow in 990,122 − 2,468?

4 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 990,122 − 2,468?

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