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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 707 · 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. 1.491 × 7 =
  2. 2.831 × 5 =
  3. 3.775 × 5 =
  4. 4.475 × 4 =
  5. 5.906 × 4 =
  6. 6.156 × 4 =
  7. 7.521 × 4 =
  8. 8.414 × 5 =
  9. 9.691 × 9 =
  10. 10.947 × 9 =
  11. 11.432 × 3 =
  12. 12.463 × 4 =
  13. 13.652 × 5 =
  14. 14.705 × 8 =
  15. 15.119 × 4 =
  16. 16.741 × 9 =
  17. 17.387 × 6 =
  18. 18.862 × 6 =
  19. 19.745 × 5 =
  20. 20.591 × 5 =
  21. 21.425 × 9 =
  22. 22.441 × 7 =
  23. 23.771 × 3 =
  24. 24.713 × 4 =
  25. 25.443 × 4 =
  26. 26.707 × 5 =
  27. 27.472 × 3 =
  28. 28.953 × 5 =
  29. 29.673 × 7 =
  30. 30.372 × 3 =
  31. 31.632 × 5 =
  32. 32.562 × 4 =
  33. 33.301 × 4 =
  34. 34.317 × 4 =
  35. 35.958 × 3 =
  36. 36.538 × 3 =
  37. 37.281 × 7 =
  38. 38.121 × 9 =
  39. 39.153 × 6 =
  40. 40.299 × 9 =

Answer key

  1. 3437
  2. 4155
  3. 3875
  4. 1900
  5. 3624
  6. 624
  7. 2084
  8. 2070
  9. 6219
  10. 8523
  11. 1296
  12. 1852
  13. 3260
  14. 5640
  15. 476
  16. 6669
  17. 2322
  18. 5172
  19. 3725
  20. 2955
  21. 3825
  22. 3087
  23. 2313
  24. 2852
  25. 1772
  26. 3535
  27. 1416
  28. 4765
  29. 4711
  30. 1116
  31. 3160
  32. 2248
  33. 1204
  34. 1268
  35. 2874
  36. 1614
  37. 1967
  38. 1089
  39. 918
  40. 2691

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