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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 673 · 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. 1.143 × 9 =
  2. 2.432 × 3 =
  3. 3.832 × 7 =
  4. 4.538 × 3 =
  5. 5.808 × 9 =
  6. 6.133 × 4 =
  7. 7.423 × 7 =
  8. 8.143 × 3 =
  9. 9.236 × 3 =
  10. 10.915 × 7 =
  11. 11.194 × 4 =
  12. 12.127 × 4 =
  13. 13.313 × 7 =
  14. 14.548 × 4 =
  15. 15.174 × 6 =
  16. 16.206 × 3 =
  17. 17.482 × 4 =
  18. 18.165 × 6 =
  19. 19.912 × 8 =
  20. 20.803 × 7 =
  21. 21.808 × 6 =
  22. 22.436 × 3 =
  23. 23.124 × 8 =
  24. 24.221 × 9 =
  25. 25.345 × 5 =
  26. 26.242 × 3 =
  27. 27.801 × 3 =
  28. 28.788 × 9 =
  29. 29.842 × 8 =
  30. 30.958 × 5 =
  31. 31.854 × 9 =
  32. 32.886 × 9 =
  33. 33.235 × 7 =
  34. 34.519 × 9 =
  35. 35.408 × 4 =
  36. 36.889 × 4 =
  37. 37.592 × 5 =
  38. 38.893 × 6 =
  39. 39.778 × 6 =
  40. 40.438 × 4 =

Answer key

  1. 1287
  2. 1296
  3. 5824
  4. 1614
  5. 7272
  6. 532
  7. 2961
  8. 429
  9. 708
  10. 6405
  11. 776
  12. 508
  13. 2191
  14. 2192
  15. 1044
  16. 618
  17. 1928
  18. 990
  19. 7296
  20. 5621
  21. 4848
  22. 1308
  23. 992
  24. 1989
  25. 1725
  26. 726
  27. 2403
  28. 7092
  29. 6736
  30. 4790
  31. 7686
  32. 7974
  33. 1645
  34. 4671
  35. 1632
  36. 3556
  37. 2960
  38. 5358
  39. 4668
  40. 1752

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