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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 651 · 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. 1.229 × 5 =
  2. 2.251 × 7 =
  3. 3.627 × 7 =
  4. 4.744 × 6 =
  5. 5.719 × 5 =
  6. 6.884 × 9 =
  7. 7.741 × 6 =
  8. 8.803 × 4 =
  9. 9.635 × 6 =
  10. 10.817 × 8 =
  11. 11.373 × 7 =
  12. 12.895 × 3 =
  13. 13.455 × 7 =
  14. 14.622 × 7 =
  15. 15.936 × 9 =
  16. 16.929 × 4 =
  17. 17.155 × 8 =
  18. 18.899 × 9 =
  19. 19.119 × 8 =
  20. 20.213 × 8 =
  21. 21.836 × 4 =
  22. 22.819 × 8 =
  23. 23.922 × 5 =
  24. 24.601 × 8 =
  25. 25.761 × 5 =
  26. 26.615 × 3 =
  27. 27.369 × 8 =
  28. 28.278 × 5 =
  29. 29.362 × 3 =
  30. 30.566 × 7 =
  31. 31.942 × 3 =
  32. 32.495 × 6 =
  33. 33.171 × 4 =
  34. 34.551 × 3 =
  35. 35.131 × 4 =
  36. 36.129 × 4 =
  37. 37.982 × 4 =
  38. 38.604 × 6 =
  39. 39.478 × 6 =
  40. 40.981 × 9 =

Answer key

  1. 1145
  2. 1757
  3. 4389
  4. 4464
  5. 3595
  6. 7956
  7. 4446
  8. 3212
  9. 3810
  10. 6536
  11. 2611
  12. 2685
  13. 3185
  14. 4354
  15. 8424
  16. 3716
  17. 1240
  18. 8091
  19. 952
  20. 1704
  21. 3344
  22. 6552
  23. 4610
  24. 4808
  25. 3805
  26. 1845
  27. 2952
  28. 1390
  29. 1086
  30. 3962
  31. 2826
  32. 2970
  33. 684
  34. 1653
  35. 524
  36. 516
  37. 3928
  38. 3624
  39. 2868
  40. 8829

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