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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 321 · 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. 1.421 × 7 =
  2. 2.591 × 3 =
  3. 3.192 × 4 =
  4. 4.896 × 4 =
  5. 5.742 × 9 =
  6. 6.417 × 9 =
  7. 7.723 × 3 =
  8. 8.706 × 7 =
  9. 9.325 × 7 =
  10. 10.148 × 9 =
  11. 11.964 × 7 =
  12. 12.945 × 4 =
  13. 13.885 × 6 =
  14. 14.178 × 8 =
  15. 15.729 × 6 =
  16. 16.726 × 9 =
  17. 17.501 × 3 =
  18. 18.676 × 4 =
  19. 19.721 × 8 =
  20. 20.437 × 3 =
  21. 21.541 × 3 =
  22. 22.555 × 4 =
  23. 23.591 × 4 =
  24. 24.123 × 8 =
  25. 25.112 × 9 =
  26. 26.752 × 6 =
  27. 27.921 × 8 =
  28. 28.933 × 7 =
  29. 29.173 × 4 =
  30. 30.166 × 6 =
  31. 31.333 × 4 =
  32. 32.818 × 9 =
  33. 33.258 × 4 =
  34. 34.382 × 9 =
  35. 35.396 × 4 =
  36. 36.885 × 4 =
  37. 37.883 × 6 =
  38. 38.492 × 6 =
  39. 39.452 × 7 =
  40. 40.202 × 3 =

Answer key

  1. 2947
  2. 1773
  3. 768
  4. 3584
  5. 6678
  6. 3753
  7. 2169
  8. 4942
  9. 2275
  10. 1332
  11. 6748
  12. 3780
  13. 5310
  14. 1424
  15. 4374
  16. 6534
  17. 1503
  18. 2704
  19. 5768
  20. 1311
  21. 1623
  22. 2220
  23. 2364
  24. 984
  25. 1008
  26. 4512
  27. 7368
  28. 6531
  29. 692
  30. 996
  31. 1332
  32. 7362
  33. 1032
  34. 3438
  35. 1584
  36. 3540
  37. 5298
  38. 2952
  39. 3164
  40. 606

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