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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 749 · 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. 1.521 × 5 =
  2. 2.341 × 3 =
  3. 3.321 × 4 =
  4. 4.792 × 6 =
  5. 5.941 × 6 =
  6. 6.943 × 5 =
  7. 7.828 × 8 =
  8. 8.885 × 7 =
  9. 9.856 × 7 =
  10. 10.685 × 7 =
  11. 11.156 × 4 =
  12. 12.655 × 6 =
  13. 13.929 × 3 =
  14. 14.865 × 6 =
  15. 15.227 × 6 =
  16. 16.808 × 5 =
  17. 17.276 × 3 =
  18. 18.643 × 8 =
  19. 19.311 × 4 =
  20. 20.155 × 8 =
  21. 21.939 × 6 =
  22. 22.961 × 4 =
  23. 23.625 × 6 =
  24. 24.569 × 3 =
  25. 25.874 × 6 =
  26. 26.161 × 4 =
  27. 27.739 × 3 =
  28. 28.771 × 9 =
  29. 29.843 × 4 =
  30. 30.397 × 7 =
  31. 31.251 × 4 =
  32. 32.843 × 9 =
  33. 33.229 × 4 =
  34. 34.225 × 8 =
  35. 35.392 × 8 =
  36. 36.247 × 3 =
  37. 37.584 × 8 =
  38. 38.622 × 4 =
  39. 39.243 × 4 =
  40. 40.547 × 4 =

Answer key

  1. 2605
  2. 1023
  3. 1284
  4. 4752
  5. 5646
  6. 4715
  7. 6624
  8. 6195
  9. 5992
  10. 4795
  11. 624
  12. 3930
  13. 2787
  14. 5190
  15. 1362
  16. 4040
  17. 828
  18. 5144
  19. 1244
  20. 1240
  21. 5634
  22. 3844
  23. 3750
  24. 1707
  25. 5244
  26. 644
  27. 2217
  28. 6939
  29. 3372
  30. 2779
  31. 1004
  32. 7587
  33. 916
  34. 1800
  35. 3136
  36. 741
  37. 4672
  38. 2488
  39. 972
  40. 2188

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