Grade 4 Math

Written subtraction

Practise careful regrouping so that subtraction such as 40,000 - 18,537 stays readable and checkable.

How to solve this

  • Line up the columns before subtracting; the smaller number may have fewer digits but its ones still go under ones.
  • If a column cannot be subtracted, regroup from the next available place. Across zeroes, move left until a non-zero digit can lend.
  • Check subtraction by addition: if 40,000 - 18,537 = 21,463, then 21,463 + 18,537 must be 40,000.

Examples

7,305 - 2,846

4,459

40,000 - 18,537

21,463

9,002 - 4,875

4,127

Practice problems with answers

Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.

  1. 16 114
    - 14 697
    = ___
  2. 43 322
    - 42 031
    = ___
  3. 16 733
    - 3 470
    = ___
  4. 75 076
    - 18 268
    = ___
  5. 9 425
    - 5 257
    = ___
  6. 56 353
    - 22 947
    = ___
  7. 70 090
    - 9 927
    = ___
  8. 47 366
    - 19 993
    = ___
Show answers
  1. 1 417
  2. 1 291
  3. 13 263
  4. 56 808
  5. 4 168
  6. 33 406
  7. 60 163
  8. 27 373

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