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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 450 · 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. 1.448 × 9 =
  2. 2.363 × 6 =
  3. 3.501 × 8 =
  4. 4.131 × 5 =
  5. 5.657 × 5 =
  6. 6.337 × 8 =
  7. 7.542 × 9 =
  8. 8.864 × 3 =
  9. 9.588 × 6 =
  10. 10.762 × 6 =
  11. 11.499 × 9 =
  12. 12.289 × 4 =
  13. 13.496 × 5 =
  14. 14.303 × 8 =
  15. 15.329 × 7 =
  16. 16.657 × 3 =
  17. 17.403 × 9 =
  18. 18.645 × 9 =
  19. 19.337 × 6 =
  20. 20.596 × 8 =
  21. 21.251 × 3 =
  22. 22.331 × 3 =
  23. 23.451 × 7 =
  24. 24.123 × 5 =
  25. 25.848 × 9 =
  26. 26.733 × 9 =
  27. 27.894 × 7 =
  28. 28.139 × 4 =
  29. 29.339 × 8 =
  30. 30.322 × 6 =
  31. 31.826 × 9 =
  32. 32.712 × 9 =
  33. 33.357 × 4 =
  34. 34.428 × 8 =
  35. 35.569 × 9 =
  36. 36.246 × 7 =
  37. 37.802 × 9 =
  38. 38.669 × 7 =
  39. 39.491 × 4 =
  40. 40.281 × 3 =

Answer key

  1. 4032
  2. 2178
  3. 4008
  4. 655
  5. 3285
  6. 2696
  7. 4878
  8. 2592
  9. 3528
  10. 4572
  11. 4491
  12. 1156
  13. 2480
  14. 2424
  15. 2303
  16. 1971
  17. 3627
  18. 5805
  19. 2022
  20. 4768
  21. 753
  22. 993
  23. 3157
  24. 615
  25. 7632
  26. 6597
  27. 6258
  28. 556
  29. 2712
  30. 1932
  31. 7434
  32. 6408
  33. 1428
  34. 3424
  35. 5121
  36. 1722
  37. 7218
  38. 4683
  39. 1964
  40. 843

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