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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 28 · 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. 1.136 × 4 =
  2. 2.435 × 7 =
  3. 3.526 × 9 =
  4. 4.558 × 3 =
  5. 5.741 × 9 =
  6. 6.807 × 3 =
  7. 7.737 × 9 =
  8. 8.343 × 7 =
  9. 9.532 × 8 =
  10. 10.731 × 3 =
  11. 11.766 × 4 =
  12. 12.876 × 4 =
  13. 13.601 × 4 =
  14. 14.185 × 5 =
  15. 15.902 × 5 =
  16. 16.488 × 3 =
  17. 17.645 × 4 =
  18. 18.848 × 8 =
  19. 19.877 × 3 =
  20. 20.762 × 5 =
  21. 21.306 × 8 =
  22. 22.598 × 9 =
  23. 23.191 × 8 =
  24. 24.631 × 8 =
  25. 25.173 × 3 =
  26. 26.499 × 5 =
  27. 27.524 × 5 =
  28. 28.324 × 8 =
  29. 29.486 × 5 =
  30. 30.651 × 3 =
  31. 31.698 × 7 =
  32. 32.131 × 5 =
  33. 33.199 × 8 =
  34. 34.121 × 9 =
  35. 35.138 × 9 =
  36. 36.954 × 8 =
  37. 37.988 × 6 =
  38. 38.971 × 6 =
  39. 39.128 × 5 =
  40. 40.252 × 7 =

Answer key

  1. 544
  2. 3045
  3. 4734
  4. 1674
  5. 6669
  6. 2421
  7. 6633
  8. 2401
  9. 4256
  10. 2193
  11. 3064
  12. 3504
  13. 2404
  14. 925
  15. 4510
  16. 1464
  17. 2580
  18. 6784
  19. 2631
  20. 3810
  21. 2448
  22. 5382
  23. 1528
  24. 5048
  25. 519
  26. 2495
  27. 2620
  28. 2592
  29. 2430
  30. 1953
  31. 4886
  32. 655
  33. 1592
  34. 1089
  35. 1242
  36. 7632
  37. 5928
  38. 5826
  39. 640
  40. 1764

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