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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 378 · 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. 1.361 × 5 =
  2. 2.348 × 9 =
  3. 3.285 × 7 =
  4. 4.913 × 6 =
  5. 5.504 × 3 =
  6. 6.411 × 6 =
  7. 7.406 × 9 =
  8. 8.761 × 3 =
  9. 9.142 × 3 =
  10. 10.921 × 9 =
  11. 11.174 × 8 =
  12. 12.792 × 9 =
  13. 13.588 × 6 =
  14. 14.712 × 3 =
  15. 15.157 × 9 =
  16. 16.211 × 5 =
  17. 17.316 × 7 =
  18. 18.347 × 4 =
  19. 19.311 × 4 =
  20. 20.784 × 9 =
  21. 21.726 × 5 =
  22. 22.881 × 3 =
  23. 23.323 × 7 =
  24. 24.298 × 7 =
  25. 25.938 × 8 =
  26. 26.806 × 5 =
  27. 27.559 × 5 =
  28. 28.321 × 5 =
  29. 29.181 × 3 =
  30. 30.911 × 4 =
  31. 31.805 × 4 =
  32. 32.742 × 5 =
  33. 33.922 × 7 =
  34. 34.478 × 6 =
  35. 35.219 × 5 =
  36. 36.606 × 9 =
  37. 37.494 × 3 =
  38. 38.344 × 4 =
  39. 39.183 × 3 =
  40. 40.163 × 7 =

Answer key

  1. 1805
  2. 3132
  3. 1995
  4. 5478
  5. 1512
  6. 2466
  7. 3654
  8. 2283
  9. 426
  10. 8289
  11. 1392
  12. 7128
  13. 3528
  14. 2136
  15. 1413
  16. 1055
  17. 2212
  18. 1388
  19. 1244
  20. 7056
  21. 3630
  22. 2643
  23. 2261
  24. 2086
  25. 7504
  26. 4030
  27. 2795
  28. 1605
  29. 543
  30. 3644
  31. 3220
  32. 3710
  33. 6454
  34. 2868
  35. 1095
  36. 5454
  37. 1482
  38. 1376
  39. 549
  40. 1141

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