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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 356 · 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. 1.231 × 7 =
  2. 2.409 × 9 =
  3. 3.418 × 8 =
  4. 4.472 × 3 =
  5. 5.372 × 9 =
  6. 6.565 × 9 =
  7. 7.348 × 9 =
  8. 8.891 × 5 =
  9. 9.941 × 9 =
  10. 10.285 × 8 =
  11. 11.715 × 8 =
  12. 12.747 × 3 =
  13. 13.205 × 3 =
  14. 14.375 × 4 =
  15. 15.727 × 4 =
  16. 16.601 × 8 =
  17. 17.203 × 5 =
  18. 18.592 × 5 =
  19. 19.574 × 5 =
  20. 20.158 × 8 =
  21. 21.214 × 7 =
  22. 22.936 × 6 =
  23. 23.815 × 3 =
  24. 24.456 × 3 =
  25. 25.928 × 7 =
  26. 26.816 × 5 =
  27. 27.768 × 5 =
  28. 28.536 × 9 =
  29. 29.178 × 8 =
  30. 30.331 × 6 =
  31. 31.422 × 6 =
  32. 32.284 × 9 =
  33. 33.413 × 6 =
  34. 34.287 × 6 =
  35. 35.416 × 7 =
  36. 36.871 × 8 =
  37. 37.364 × 3 =
  38. 38.735 × 6 =
  39. 39.336 × 7 =
  40. 40.951 × 3 =

Answer key

  1. 1617
  2. 3681
  3. 3344
  4. 1416
  5. 3348
  6. 5085
  7. 3132
  8. 4455
  9. 8469
  10. 2280
  11. 5720
  12. 2241
  13. 615
  14. 1500
  15. 2908
  16. 4808
  17. 1015
  18. 2960
  19. 2870
  20. 1264
  21. 1498
  22. 5616
  23. 2445
  24. 1368
  25. 6496
  26. 4080
  27. 3840
  28. 4824
  29. 1424
  30. 1986
  31. 2532
  32. 2556
  33. 2478
  34. 1722
  35. 2912
  36. 6968
  37. 1092
  38. 4410
  39. 2352
  40. 2853

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