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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 21 · 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. 1.151 × 4 =
  2. 2.337 × 4 =
  3. 3.828 × 7 =
  4. 4.171 × 4 =
  5. 5.414 × 5 =
  6. 6.904 × 8 =
  7. 7.881 × 8 =
  8. 8.371 × 3 =
  9. 9.651 × 4 =
  10. 10.197 × 7 =
  11. 11.954 × 9 =
  12. 12.659 × 6 =
  13. 13.611 × 9 =
  14. 14.162 × 6 =
  15. 15.352 × 3 =
  16. 16.815 × 8 =
  17. 17.161 × 5 =
  18. 18.424 × 7 =
  19. 19.249 × 6 =
  20. 20.904 × 7 =
  21. 21.501 × 8 =
  22. 22.852 × 4 =
  23. 23.437 × 5 =
  24. 24.166 × 6 =
  25. 25.272 × 8 =
  26. 26.513 × 4 =
  27. 27.461 × 6 =
  28. 28.373 × 7 =
  29. 29.356 × 5 =
  30. 30.924 × 7 =
  31. 31.146 × 7 =
  32. 32.929 × 6 =
  33. 33.556 × 5 =
  34. 34.141 × 6 =
  35. 35.723 × 5 =
  36. 36.628 × 9 =
  37. 37.166 × 8 =
  38. 38.451 × 8 =
  39. 39.709 × 7 =
  40. 40.901 × 6 =

Answer key

  1. 604
  2. 1348
  3. 5796
  4. 684
  5. 2070
  6. 7232
  7. 7048
  8. 1113
  9. 2604
  10. 1379
  11. 8586
  12. 3954
  13. 5499
  14. 972
  15. 1056
  16. 6520
  17. 805
  18. 2968
  19. 1494
  20. 6328
  21. 4008
  22. 3408
  23. 2185
  24. 996
  25. 2176
  26. 2052
  27. 2766
  28. 2611
  29. 1780
  30. 6468
  31. 1022
  32. 5574
  33. 2780
  34. 846
  35. 3615
  36. 5652
  37. 1328
  38. 3608
  39. 4963
  40. 5406

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