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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 819 · 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. 1.421 × 7 =
  2. 2.646 × 9 =
  3. 3.899 × 9 =
  4. 4.541 × 3 =
  5. 5.339 × 4 =
  6. 6.625 × 6 =
  7. 7.772 × 6 =
  8. 8.222 × 5 =
  9. 9.122 × 4 =
  10. 10.451 × 4 =
  11. 11.348 × 8 =
  12. 12.427 × 8 =
  13. 13.423 × 4 =
  14. 14.508 × 9 =
  15. 15.517 × 7 =
  16. 16.165 × 5 =
  17. 17.756 × 9 =
  18. 18.155 × 7 =
  19. 19.423 × 3 =
  20. 20.707 × 8 =
  21. 21.496 × 4 =
  22. 22.294 × 6 =
  23. 23.851 × 4 =
  24. 24.922 × 4 =
  25. 25.333 × 4 =
  26. 26.888 × 6 =
  27. 27.276 × 6 =
  28. 28.746 × 4 =
  29. 29.703 × 9 =
  30. 30.223 × 8 =
  31. 31.491 × 5 =
  32. 32.736 × 7 =
  33. 33.585 × 3 =
  34. 34.896 × 4 =
  35. 35.641 × 5 =
  36. 36.171 × 9 =
  37. 37.146 × 6 =
  38. 38.595 × 4 =
  39. 39.125 × 4 =
  40. 40.264 × 7 =

Answer key

  1. 2947
  2. 5814
  3. 8091
  4. 1623
  5. 1356
  6. 3750
  7. 4632
  8. 1110
  9. 488
  10. 1804
  11. 2784
  12. 3416
  13. 1692
  14. 4572
  15. 3619
  16. 825
  17. 6804
  18. 1085
  19. 1269
  20. 5656
  21. 1984
  22. 1764
  23. 3404
  24. 3688
  25. 1332
  26. 5328
  27. 1656
  28. 2984
  29. 6327
  30. 1784
  31. 2455
  32. 5152
  33. 1755
  34. 3584
  35. 3205
  36. 1539
  37. 876
  38. 2380
  39. 500
  40. 1848

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