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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 142 · 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. 1.573 × 9 =
  2. 2.738 × 5 =
  3. 3.907 × 9 =
  4. 4.264 × 5 =
  5. 5.845 × 8 =
  6. 6.508 × 9 =
  7. 7.313 × 3 =
  8. 8.773 × 6 =
  9. 9.825 × 4 =
  10. 10.284 × 4 =
  11. 11.931 × 3 =
  12. 12.482 × 5 =
  13. 13.379 × 8 =
  14. 14.146 × 5 =
  15. 15.659 × 5 =
  16. 16.686 × 3 =
  17. 17.337 × 3 =
  18. 18.361 × 3 =
  19. 19.959 × 4 =
  20. 20.675 × 7 =
  21. 21.523 × 3 =
  22. 22.243 × 4 =
  23. 23.311 × 9 =
  24. 24.204 × 6 =
  25. 25.638 × 5 =
  26. 26.851 × 5 =
  27. 27.809 × 7 =
  28. 28.965 × 5 =
  29. 29.525 × 4 =
  30. 30.773 × 3 =
  31. 31.539 × 3 =
  32. 32.461 × 3 =
  33. 33.885 × 7 =
  34. 34.195 × 4 =
  35. 35.728 × 4 =
  36. 36.864 × 9 =
  37. 37.543 × 9 =
  38. 38.717 × 9 =
  39. 39.513 × 3 =
  40. 40.901 × 9 =

Answer key

  1. 5157
  2. 3690
  3. 8163
  4. 1320
  5. 6760
  6. 4572
  7. 939
  8. 4638
  9. 3300
  10. 1136
  11. 2793
  12. 2410
  13. 3032
  14. 730
  15. 3295
  16. 2058
  17. 1011
  18. 1083
  19. 3836
  20. 4725
  21. 1569
  22. 972
  23. 2799
  24. 1224
  25. 3190
  26. 4255
  27. 5663
  28. 4825
  29. 2100
  30. 2319
  31. 1617
  32. 1383
  33. 6195
  34. 780
  35. 2912
  36. 7776
  37. 4887
  38. 6453
  39. 1539
  40. 8109

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