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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 424 · 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. 1.336 × 3 =
  2. 2.744 × 3 =
  3. 3.281 × 4 =
  4. 4.348 × 4 =
  5. 5.731 × 4 =
  6. 6.144 × 3 =
  7. 7.926 × 4 =
  8. 8.631 × 7 =
  9. 9.285 × 7 =
  10. 10.452 × 8 =
  11. 11.293 × 9 =
  12. 12.745 × 4 =
  13. 13.822 × 9 =
  14. 14.601 × 5 =
  15. 15.799 × 5 =
  16. 16.321 × 9 =
  17. 17.433 × 9 =
  18. 18.834 × 3 =
  19. 19.697 × 8 =
  20. 20.491 × 8 =
  21. 21.681 × 8 =
  22. 22.922 × 7 =
  23. 23.223 × 5 =
  24. 24.433 × 8 =
  25. 25.809 × 6 =
  26. 26.499 × 5 =
  27. 27.703 × 4 =
  28. 28.345 × 8 =
  29. 29.115 × 4 =
  30. 30.828 × 4 =
  31. 31.921 × 8 =
  32. 32.242 × 3 =
  33. 33.233 × 7 =
  34. 34.685 × 4 =
  35. 35.501 × 9 =
  36. 36.487 × 7 =
  37. 37.338 × 3 =
  38. 38.761 × 3 =
  39. 39.867 × 9 =
  40. 40.781 × 3 =

Answer key

  1. 1008
  2. 2232
  3. 1124
  4. 1392
  5. 2924
  6. 432
  7. 3704
  8. 4417
  9. 1995
  10. 3616
  11. 2637
  12. 2980
  13. 7398
  14. 3005
  15. 3995
  16. 2889
  17. 3897
  18. 2502
  19. 5576
  20. 3928
  21. 5448
  22. 6454
  23. 1115
  24. 3464
  25. 4854
  26. 2495
  27. 2812
  28. 2760
  29. 460
  30. 3312
  31. 7368
  32. 726
  33. 1631
  34. 2740
  35. 4509
  36. 3409
  37. 1014
  38. 2283
  39. 7803
  40. 2343

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