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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 30 · 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. 1.139 × 7 =
  2. 2.748 × 6 =
  3. 3.381 × 8 =
  4. 4.943 × 3 =
  5. 5.955 × 5 =
  6. 6.479 × 8 =
  7. 7.129 × 4 =
  8. 8.828 × 8 =
  9. 9.858 × 4 =
  10. 10.732 × 6 =
  11. 11.431 × 5 =
  12. 12.242 × 7 =
  13. 13.636 × 7 =
  14. 14.731 × 5 =
  15. 15.404 × 8 =
  16. 16.181 × 6 =
  17. 17.127 × 3 =
  18. 18.743 × 9 =
  19. 19.848 × 3 =
  20. 20.716 × 4 =
  21. 21.293 × 4 =
  22. 22.374 × 3 =
  23. 23.361 × 4 =
  24. 24.683 × 7 =
  25. 25.411 × 9 =
  26. 26.299 × 6 =
  27. 27.581 × 4 =
  28. 28.868 × 4 =
  29. 29.401 × 7 =
  30. 30.307 × 4 =
  31. 31.814 × 7 =
  32. 32.329 × 5 =
  33. 33.754 × 6 =
  34. 34.462 × 6 =
  35. 35.411 × 6 =
  36. 36.277 × 8 =
  37. 37.353 × 5 =
  38. 38.707 × 6 =
  39. 39.237 × 9 =
  40. 40.304 × 7 =

Answer key

  1. 973
  2. 4488
  3. 3048
  4. 2829
  5. 4775
  6. 3832
  7. 516
  8. 6624
  9. 3432
  10. 4392
  11. 2155
  12. 1694
  13. 4452
  14. 3655
  15. 3232
  16. 1086
  17. 381
  18. 6687
  19. 2544
  20. 2864
  21. 1172
  22. 1122
  23. 1444
  24. 4781
  25. 3699
  26. 1794
  27. 2324
  28. 3472
  29. 2807
  30. 1228
  31. 5698
  32. 1645
  33. 4524
  34. 2772
  35. 2466
  36. 2216
  37. 1765
  38. 4242
  39. 2133
  40. 2128

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