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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 438 · 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. 1.607 × 3 =
  2. 2.171 × 5 =
  3. 3.302 × 9 =
  4. 4.664 × 5 =
  5. 5.189 × 6 =
  6. 6.116 × 4 =
  7. 7.429 × 6 =
  8. 8.684 × 4 =
  9. 9.701 × 5 =
  10. 10.987 × 5 =
  11. 11.787 × 9 =
  12. 12.472 × 4 =
  13. 13.121 × 5 =
  14. 14.278 × 4 =
  15. 15.278 × 9 =
  16. 16.641 × 6 =
  17. 17.341 × 7 =
  18. 18.236 × 3 =
  19. 19.437 × 4 =
  20. 20.637 × 8 =
  21. 21.645 × 6 =
  22. 22.621 × 7 =
  23. 23.975 × 9 =
  24. 24.232 × 4 =
  25. 25.258 × 7 =
  26. 26.491 × 5 =
  27. 27.506 × 6 =
  28. 28.398 × 3 =
  29. 29.969 × 9 =
  30. 30.987 × 4 =
  31. 31.862 × 9 =
  32. 32.573 × 4 =
  33. 33.986 × 8 =
  34. 34.305 × 6 =
  35. 35.264 × 6 =
  36. 36.531 × 6 =
  37. 37.183 × 5 =
  38. 38.535 × 8 =
  39. 39.155 × 6 =
  40. 40.709 × 6 =

Answer key

  1. 1821
  2. 855
  3. 2718
  4. 3320
  5. 1134
  6. 464
  7. 2574
  8. 2736
  9. 3505
  10. 4935
  11. 7083
  12. 1888
  13. 605
  14. 1112
  15. 2502
  16. 3846
  17. 2387
  18. 708
  19. 1748
  20. 5096
  21. 3870
  22. 4347
  23. 8775
  24. 928
  25. 1806
  26. 2455
  27. 3036
  28. 1194
  29. 8721
  30. 3948
  31. 7758
  32. 2292
  33. 7888
  34. 1830
  35. 1584
  36. 3186
  37. 915
  38. 4280
  39. 930
  40. 4254

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