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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 121 · 40 questions
TalentJR

How to do it in your head (Biggest part first): Split the 3-digit number into hundreds, tens and ones. Multiply the hundreds and keep that number in your head. Multiply the tens and add, then multiply the ones and add.

NameDateTime takenScore ___ / 40
  1. 1.531 × 3 =
  2. 2.787 × 5 =
  3. 3.201 × 5 =
  4. 4.512 × 4 =
  5. 5.366 × 8 =
  6. 6.563 × 3 =
  7. 7.592 × 9 =
  8. 8.438 × 9 =
  9. 9.976 × 3 =
  10. 10.943 × 7 =
  11. 11.374 × 5 =
  12. 12.124 × 4 =
  13. 13.171 × 3 =
  14. 14.842 × 3 =
  15. 15.399 × 4 =
  16. 16.789 × 9 =
  17. 17.562 × 6 =
  18. 18.621 × 6 =
  19. 19.331 × 9 =
  20. 20.902 × 6 =
  21. 21.351 × 3 =
  22. 22.547 × 4 =
  23. 23.196 × 4 =
  24. 24.866 × 4 =
  25. 25.529 × 7 =
  26. 26.459 × 9 =
  27. 27.789 × 3 =
  28. 28.654 × 5 =
  29. 29.655 × 3 =
  30. 30.445 × 4 =
  31. 31.941 × 8 =
  32. 32.785 × 8 =
  33. 33.808 × 7 =
  34. 34.617 × 5 =
  35. 35.185 × 4 =
  36. 36.271 × 9 =
  37. 37.267 × 4 =
  38. 38.707 × 7 =
  39. 39.474 × 3 =
  40. 40.601 × 8 =

Answer key

  1. 1593
  2. 3935
  3. 1005
  4. 2048
  5. 2928
  6. 1689
  7. 5328
  8. 3942
  9. 2928
  10. 6601
  11. 1870
  12. 496
  13. 513
  14. 2526
  15. 1596
  16. 7101
  17. 3372
  18. 3726
  19. 2979
  20. 5412
  21. 1053
  22. 2188
  23. 784
  24. 3464
  25. 3703
  26. 4131
  27. 2367
  28. 3270
  29. 1965
  30. 1780
  31. 7528
  32. 6280
  33. 5656
  34. 3085
  35. 740
  36. 2439
  37. 1068
  38. 4949
  39. 1422
  40. 4808

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