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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 386 · 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. 1.144 × 8 =
  2. 2.811 × 5 =
  3. 3.882 × 3 =
  4. 4.481 × 9 =
  5. 5.721 × 5 =
  6. 6.465 × 3 =
  7. 7.338 × 3 =
  8. 8.681 × 3 =
  9. 9.687 × 4 =
  10. 10.834 × 3 =
  11. 11.984 × 6 =
  12. 12.567 × 6 =
  13. 13.901 × 4 =
  14. 14.539 × 6 =
  15. 15.451 × 3 =
  16. 16.113 × 9 =
  17. 17.527 × 5 =
  18. 18.811 × 4 =
  19. 19.505 × 4 =
  20. 20.986 × 7 =
  21. 21.451 × 5 =
  22. 22.117 × 4 =
  23. 23.358 × 5 =
  24. 24.915 × 3 =
  25. 25.378 × 5 =
  26. 26.585 × 3 =
  27. 27.216 × 3 =
  28. 28.144 × 6 =
  29. 29.663 × 8 =
  30. 30.446 × 4 =
  31. 31.411 × 4 =
  32. 32.303 × 7 =
  33. 33.274 × 4 =
  34. 34.655 × 8 =
  35. 35.298 × 6 =
  36. 36.708 × 4 =
  37. 37.611 × 7 =
  38. 38.491 × 7 =
  39. 39.285 × 9 =
  40. 40.788 × 7 =

Answer key

  1. 1152
  2. 4055
  3. 2646
  4. 4329
  5. 3605
  6. 1395
  7. 1014
  8. 2043
  9. 2748
  10. 2502
  11. 5904
  12. 3402
  13. 3604
  14. 3234
  15. 1353
  16. 1017
  17. 2635
  18. 3244
  19. 2020
  20. 6902
  21. 2255
  22. 468
  23. 1790
  24. 2745
  25. 1890
  26. 1755
  27. 648
  28. 864
  29. 5304
  30. 1784
  31. 1644
  32. 2121
  33. 1096
  34. 5240
  35. 1788
  36. 2832
  37. 4277
  38. 3437
  39. 2565
  40. 5516

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