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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 675 · 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. 1.139 × 9 =
  2. 2.339 × 6 =
  3. 3.549 × 8 =
  4. 4.171 × 5 =
  5. 5.965 × 8 =
  6. 6.209 × 9 =
  7. 7.823 × 9 =
  8. 8.474 × 8 =
  9. 9.263 × 7 =
  10. 10.278 × 4 =
  11. 11.448 × 9 =
  12. 12.661 × 6 =
  13. 13.179 × 5 =
  14. 14.389 × 9 =
  15. 15.327 × 9 =
  16. 16.388 × 3 =
  17. 17.203 × 3 =
  18. 18.137 × 8 =
  19. 19.317 × 3 =
  20. 20.777 × 5 =
  21. 21.288 × 5 =
  22. 22.293 × 4 =
  23. 23.753 × 5 =
  24. 24.295 × 7 =
  25. 25.427 × 4 =
  26. 26.125 × 8 =
  27. 27.749 × 3 =
  28. 28.138 × 7 =
  29. 29.846 × 4 =
  30. 30.633 × 7 =
  31. 31.621 × 8 =
  32. 32.314 × 4 =
  33. 33.595 × 3 =
  34. 34.211 × 4 =
  35. 35.445 × 9 =
  36. 36.381 × 4 =
  37. 37.293 × 6 =
  38. 38.757 × 4 =
  39. 39.445 × 6 =
  40. 40.457 × 6 =

Answer key

  1. 1251
  2. 2034
  3. 4392
  4. 855
  5. 7720
  6. 1881
  7. 7407
  8. 3792
  9. 1841
  10. 1112
  11. 4032
  12. 3966
  13. 895
  14. 3501
  15. 2943
  16. 1164
  17. 609
  18. 1096
  19. 951
  20. 3885
  21. 1440
  22. 1172
  23. 3765
  24. 2065
  25. 1708
  26. 1000
  27. 2247
  28. 966
  29. 3384
  30. 4431
  31. 4968
  32. 1256
  33. 1785
  34. 844
  35. 4005
  36. 1524
  37. 1758
  38. 3028
  39. 2670
  40. 2742

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