A real Learning Lab sheet for a pretend child, Riley. Sign in free to get sheets like this every week at your child's own level.

Level 21 of 40 in Learning Lab's math ladder, in the “Regrouping” stage. Many children reach it around age 8, but levels aren't tied to age.

This sheet has 20 questions at this level plus 3 review questions from the levels just before it. Mastered after three sheets in a row at 90% or more. It can be printed or done on screen in kid mode.

Learning Lab

Math · Level 21

3-digit subtraction (with regrouping)

M21-QZC7

Riley · Week of Nov 2

Name: Score: / 20 · Review / 3
  1. 1.986−879
  2. 2.364−345
  3. 3.512−247
  4. 4.511−440
  5. 5.983−587
  6. 6.859−468
  7. 7.359−162
  8. 8.402−259
  9. 9.751−178
  10. 10.727−439
  11. 11.801−270
  12. 12.473−459
  13. 13.792−204
  14. 14.891−276
  15. 15.875−180
  16. 16.970−361
  17. 17.837−389
  18. 18.705−249
  19. 19.392−147
  20. 20.443−165

Review — from earlier levels

  1. 21.60−36
  2. 22.59+25
  3. 23.49+19
learn.firminlabs.com · Do your best — mistakes help you learn.

Learning Lab · Answer key

Math · Level 21

3-digit subtraction (with regrouping)

M21-QZC7

Riley · Week of Nov 2

For grown-ups — keep this page separate from the sheet.

  1. 107
  2. 19
  3. 265
  4. 71
  5. 396
  6. 391
  7. 197
  8. 143
  9. 573
  10. 288
  11. 531
  12. 14
  13. 588
  14. 615
  15. 695
  16. 609
  17. 448
  18. 456
  19. 245
  20. 278
  21. 24 review
  22. 84 review
  23. 68 review