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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 489 · 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. 1.316 × 4 =
  2. 2.651 × 8 =
  3. 3.851 × 7 =
  4. 4.237 × 5 =
  5. 5.181 × 5 =
  6. 6.248 × 6 =
  7. 7.171 × 9 =
  8. 8.225 × 3 =
  9. 9.237 × 3 =
  10. 10.635 × 3 =
  11. 11.417 × 3 =
  12. 12.841 × 3 =
  13. 13.446 × 7 =
  14. 14.863 × 4 =
  15. 15.134 × 8 =
  16. 16.985 × 5 =
  17. 17.405 × 9 =
  18. 18.151 × 3 =
  19. 19.769 × 8 =
  20. 20.845 × 6 =
  21. 21.854 × 6 =
  22. 22.593 × 7 =
  23. 23.169 × 5 =
  24. 24.369 × 4 =
  25. 25.433 × 9 =
  26. 26.822 × 4 =
  27. 27.928 × 4 =
  28. 28.971 × 4 =
  29. 29.473 × 4 =
  30. 30.212 × 7 =
  31. 31.466 × 4 =
  32. 32.234 × 3 =
  33. 33.514 × 3 =
  34. 34.371 × 9 =
  35. 35.699 × 8 =
  36. 36.536 × 9 =
  37. 37.728 × 7 =
  38. 38.935 × 3 =
  39. 39.534 × 5 =
  40. 40.115 × 9 =

Answer key

  1. 1264
  2. 5208
  3. 5957
  4. 1185
  5. 905
  6. 1488
  7. 1539
  8. 675
  9. 711
  10. 1905
  11. 1251
  12. 2523
  13. 3122
  14. 3452
  15. 1072
  16. 4925
  17. 3645
  18. 453
  19. 6152
  20. 5070
  21. 5124
  22. 4151
  23. 845
  24. 1476
  25. 3897
  26. 3288
  27. 3712
  28. 3884
  29. 1892
  30. 1484
  31. 1864
  32. 702
  33. 1542
  34. 3339
  35. 5592
  36. 4824
  37. 5096
  38. 2805
  39. 2670
  40. 1035

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