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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 631 · 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. 1.689 × 4 =
  2. 2.387 × 3 =
  3. 3.881 × 3 =
  4. 4.492 × 4 =
  5. 5.929 × 5 =
  6. 6.543 × 3 =
  7. 7.505 × 7 =
  8. 8.955 × 6 =
  9. 9.723 × 3 =
  10. 10.541 × 3 =
  11. 11.435 × 8 =
  12. 12.942 × 3 =
  13. 13.149 × 9 =
  14. 14.281 × 6 =
  15. 15.391 × 3 =
  16. 16.194 × 4 =
  17. 17.308 × 9 =
  18. 18.122 × 6 =
  19. 19.361 × 8 =
  20. 20.649 × 6 =
  21. 21.122 × 9 =
  22. 22.698 × 3 =
  23. 23.316 × 7 =
  24. 24.726 × 9 =
  25. 25.633 × 5 =
  26. 26.709 × 5 =
  27. 27.539 × 6 =
  28. 28.405 × 6 =
  29. 29.913 × 8 =
  30. 30.615 × 9 =
  31. 31.874 × 9 =
  32. 32.537 × 8 =
  33. 33.268 × 9 =
  34. 34.919 × 4 =
  35. 35.879 × 3 =
  36. 36.201 × 4 =
  37. 37.525 × 3 =
  38. 38.612 × 3 =
  39. 39.642 × 5 =
  40. 40.169 × 5 =

Answer key

  1. 2756
  2. 1161
  3. 2643
  4. 1968
  5. 4645
  6. 1629
  7. 3535
  8. 5730
  9. 2169
  10. 1623
  11. 3480
  12. 2826
  13. 1341
  14. 1686
  15. 1173
  16. 776
  17. 2772
  18. 732
  19. 2888
  20. 3894
  21. 1098
  22. 2094
  23. 2212
  24. 6534
  25. 3165
  26. 3545
  27. 3234
  28. 2430
  29. 7304
  30. 5535
  31. 7866
  32. 4296
  33. 2412
  34. 3676
  35. 2637
  36. 804
  37. 1575
  38. 1836
  39. 3210
  40. 845

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