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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 790 · 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. 1.721 × 9 =
  2. 2.711 × 8 =
  3. 3.394 × 3 =
  4. 4.335 × 9 =
  5. 5.481 × 8 =
  6. 6.583 × 3 =
  7. 7.887 × 9 =
  8. 8.898 × 5 =
  9. 9.167 × 7 =
  10. 10.758 × 8 =
  11. 11.395 × 6 =
  12. 12.203 × 4 =
  13. 13.352 × 7 =
  14. 14.308 × 8 =
  15. 15.115 × 3 =
  16. 16.165 × 9 =
  17. 17.579 × 9 =
  18. 18.596 × 8 =
  19. 19.229 × 4 =
  20. 20.309 × 9 =
  21. 21.266 × 4 =
  22. 22.605 × 4 =
  23. 23.291 × 7 =
  24. 24.692 × 6 =
  25. 25.581 × 8 =
  26. 26.691 × 4 =
  27. 27.255 × 6 =
  28. 28.192 × 3 =
  29. 29.654 × 4 =
  30. 30.843 × 3 =
  31. 31.894 × 8 =
  32. 32.954 × 8 =
  33. 33.945 × 9 =
  34. 34.675 × 4 =
  35. 35.923 × 3 =
  36. 36.931 × 7 =
  37. 37.792 × 6 =
  38. 38.242 × 4 =
  39. 39.346 × 3 =
  40. 40.744 × 8 =

Answer key

  1. 6489
  2. 5688
  3. 1182
  4. 3015
  5. 3848
  6. 1749
  7. 7983
  8. 4490
  9. 1169
  10. 6064
  11. 2370
  12. 812
  13. 2464
  14. 2464
  15. 345
  16. 1485
  17. 5211
  18. 4768
  19. 916
  20. 2781
  21. 1064
  22. 2420
  23. 2037
  24. 4152
  25. 4648
  26. 2764
  27. 1530
  28. 576
  29. 2616
  30. 2529
  31. 7152
  32. 7632
  33. 8505
  34. 2700
  35. 2769
  36. 6517
  37. 4752
  38. 968
  39. 1038
  40. 5952

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