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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 345 · 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. 1.228 × 9 =
  2. 2.371 × 7 =
  3. 3.545 × 7 =
  4. 4.616 × 8 =
  5. 5.521 × 9 =
  6. 6.429 × 9 =
  7. 7.253 × 4 =
  8. 8.865 × 4 =
  9. 9.797 × 8 =
  10. 10.167 × 4 =
  11. 11.671 × 3 =
  12. 12.291 × 8 =
  13. 13.675 × 5 =
  14. 14.403 × 5 =
  15. 15.786 × 9 =
  16. 16.201 × 7 =
  17. 17.881 × 7 =
  18. 18.281 × 9 =
  19. 19.834 × 4 =
  20. 20.742 × 3 =
  21. 21.247 × 8 =
  22. 22.155 × 3 =
  23. 23.301 × 4 =
  24. 24.671 × 5 =
  25. 25.532 × 5 =
  26. 26.891 × 5 =
  27. 27.637 × 4 =
  28. 28.917 × 3 =
  29. 29.976 × 4 =
  30. 30.869 × 6 =
  31. 31.258 × 3 =
  32. 32.907 × 5 =
  33. 33.521 × 3 =
  34. 34.499 × 3 =
  35. 35.783 × 8 =
  36. 36.403 × 9 =
  37. 37.929 × 4 =
  38. 38.867 × 8 =
  39. 39.761 × 7 =
  40. 40.361 × 3 =

Answer key

  1. 2052
  2. 2597
  3. 3815
  4. 4928
  5. 4689
  6. 3861
  7. 1012
  8. 3460
  9. 6376
  10. 668
  11. 2013
  12. 2328
  13. 3375
  14. 2015
  15. 7074
  16. 1407
  17. 6167
  18. 2529
  19. 3336
  20. 2226
  21. 1976
  22. 465
  23. 1204
  24. 3355
  25. 2660
  26. 4455
  27. 2548
  28. 2751
  29. 3904
  30. 5214
  31. 774
  32. 4535
  33. 1563
  34. 1497
  35. 6264
  36. 3627
  37. 3716
  38. 6936
  39. 5327
  40. 1083

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