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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 114 · 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. 1.729 × 5 =
  2. 2.185 × 8 =
  3. 3.292 × 7 =
  4. 4.688 × 3 =
  5. 5.689 × 7 =
  6. 6.951 × 4 =
  7. 7.906 × 7 =
  8. 8.191 × 8 =
  9. 9.612 × 5 =
  10. 10.517 × 3 =
  11. 11.501 × 3 =
  12. 12.249 × 3 =
  13. 13.371 × 8 =
  14. 14.424 × 7 =
  15. 15.357 × 4 =
  16. 16.372 × 4 =
  17. 17.675 × 9 =
  18. 18.491 × 4 =
  19. 19.469 × 7 =
  20. 20.454 × 9 =
  21. 21.348 × 5 =
  22. 22.637 × 5 =
  23. 23.864 × 4 =
  24. 24.838 × 6 =
  25. 25.951 × 8 =
  26. 26.263 × 9 =
  27. 27.665 × 6 =
  28. 28.526 × 4 =
  29. 29.171 × 9 =
  30. 30.798 × 8 =
  31. 31.212 × 7 =
  32. 32.633 × 5 =
  33. 33.162 × 3 =
  34. 34.181 × 4 =
  35. 35.705 × 6 =
  36. 36.331 × 8 =
  37. 37.138 × 9 =
  38. 38.617 × 3 =
  39. 39.231 × 8 =
  40. 40.871 × 3 =

Answer key

  1. 3645
  2. 1480
  3. 2044
  4. 2064
  5. 4823
  6. 3804
  7. 6342
  8. 1528
  9. 3060
  10. 1551
  11. 1503
  12. 747
  13. 2968
  14. 2968
  15. 1428
  16. 1488
  17. 6075
  18. 1964
  19. 3283
  20. 4086
  21. 1740
  22. 3185
  23. 3456
  24. 5028
  25. 7608
  26. 2367
  27. 3990
  28. 2104
  29. 1539
  30. 6384
  31. 1484
  32. 3165
  33. 486
  34. 724
  35. 4230
  36. 2648
  37. 1242
  38. 1851
  39. 1848
  40. 2613

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