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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 115 · 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. 1.497 × 9 =
  2. 2.891 × 4 =
  3. 3.319 × 3 =
  4. 4.607 × 4 =
  5. 5.548 × 8 =
  6. 6.791 × 4 =
  7. 7.203 × 6 =
  8. 8.961 × 6 =
  9. 9.813 × 9 =
  10. 10.715 × 4 =
  11. 11.495 × 4 =
  12. 12.629 × 4 =
  13. 13.923 × 6 =
  14. 14.791 × 9 =
  15. 15.947 × 9 =
  16. 16.311 × 6 =
  17. 17.848 × 8 =
  18. 18.192 × 8 =
  19. 19.423 × 8 =
  20. 20.241 × 9 =
  21. 21.625 × 8 =
  22. 22.793 × 5 =
  23. 23.582 × 3 =
  24. 24.713 × 6 =
  25. 25.221 × 4 =
  26. 26.175 × 6 =
  27. 27.334 × 4 =
  28. 28.199 × 4 =
  29. 29.952 × 4 =
  30. 30.879 × 9 =
  31. 31.698 × 8 =
  32. 32.913 × 4 =
  33. 33.478 × 5 =
  34. 34.475 × 8 =
  35. 35.114 × 3 =
  36. 36.802 × 4 =
  37. 37.751 × 4 =
  38. 38.758 × 7 =
  39. 39.911 × 3 =
  40. 40.436 × 3 =

Answer key

  1. 4473
  2. 3564
  3. 957
  4. 2428
  5. 4384
  6. 3164
  7. 1218
  8. 5766
  9. 7317
  10. 2860
  11. 1980
  12. 2516
  13. 5538
  14. 7119
  15. 8523
  16. 1866
  17. 6784
  18. 1536
  19. 3384
  20. 2169
  21. 5000
  22. 3965
  23. 1746
  24. 4278
  25. 884
  26. 1050
  27. 1336
  28. 796
  29. 3808
  30. 7911
  31. 5584
  32. 3652
  33. 2390
  34. 3800
  35. 342
  36. 3208
  37. 3004
  38. 5306
  39. 2733
  40. 1308

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