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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 105 · 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. 1.869 × 3 =
  2. 2.279 × 5 =
  3. 3.419 × 4 =
  4. 4.517 × 8 =
  5. 5.355 × 5 =
  6. 6.531 × 6 =
  7. 7.631 × 6 =
  8. 8.551 × 6 =
  9. 9.693 × 7 =
  10. 10.443 × 3 =
  11. 11.618 × 5 =
  12. 12.893 × 4 =
  13. 13.484 × 5 =
  14. 14.881 × 6 =
  15. 15.271 × 7 =
  16. 16.329 × 9 =
  17. 17.615 × 7 =
  18. 18.366 × 8 =
  19. 19.229 × 5 =
  20. 20.258 × 9 =
  21. 21.322 × 6 =
  22. 22.361 × 7 =
  23. 23.596 × 7 =
  24. 24.633 × 8 =
  25. 25.346 × 5 =
  26. 26.541 × 6 =
  27. 27.917 × 5 =
  28. 28.615 × 5 =
  29. 29.759 × 4 =
  30. 30.271 × 6 =
  31. 31.199 × 8 =
  32. 32.868 × 8 =
  33. 33.371 × 6 =
  34. 34.218 × 6 =
  35. 35.174 × 5 =
  36. 36.906 × 3 =
  37. 37.215 × 8 =
  38. 38.464 × 9 =
  39. 39.951 × 5 =
  40. 40.476 × 3 =

Answer key

  1. 2607
  2. 1395
  3. 1676
  4. 4136
  5. 1775
  6. 3186
  7. 3786
  8. 3306
  9. 4851
  10. 1329
  11. 3090
  12. 3572
  13. 2420
  14. 5286
  15. 1897
  16. 2961
  17. 4305
  18. 2928
  19. 1145
  20. 2322
  21. 1932
  22. 2527
  23. 4172
  24. 5064
  25. 1730
  26. 3246
  27. 4585
  28. 3075
  29. 3036
  30. 1626
  31. 1592
  32. 6944
  33. 2226
  34. 1308
  35. 870
  36. 2718
  37. 1720
  38. 4176
  39. 4755
  40. 1428

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