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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 729 · 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. 1.843 × 4 =
  2. 2.574 × 4 =
  3. 3.279 × 7 =
  4. 4.758 × 4 =
  5. 5.705 × 8 =
  6. 6.314 × 8 =
  7. 7.917 × 5 =
  8. 8.188 × 8 =
  9. 9.364 × 3 =
  10. 10.556 × 7 =
  11. 11.295 × 7 =
  12. 12.437 × 6 =
  13. 13.872 × 3 =
  14. 14.881 × 9 =
  15. 15.295 × 8 =
  16. 16.213 × 6 =
  17. 17.806 × 4 =
  18. 18.152 × 3 =
  19. 19.192 × 9 =
  20. 20.473 × 3 =
  21. 21.275 × 4 =
  22. 22.881 × 3 =
  23. 23.121 × 4 =
  24. 24.953 × 4 =
  25. 25.465 × 6 =
  26. 26.342 × 8 =
  27. 27.331 × 4 =
  28. 28.551 × 4 =
  29. 29.979 × 3 =
  30. 30.173 × 9 =
  31. 31.343 × 3 =
  32. 32.906 × 7 =
  33. 33.681 × 7 =
  34. 34.968 × 9 =
  35. 35.326 × 5 =
  36. 36.408 × 8 =
  37. 37.534 × 6 =
  38. 38.225 × 7 =
  39. 39.497 × 5 =
  40. 40.939 × 5 =

Answer key

  1. 3372
  2. 2296
  3. 1953
  4. 3032
  5. 5640
  6. 2512
  7. 4585
  8. 1504
  9. 1092
  10. 3892
  11. 2065
  12. 2622
  13. 2616
  14. 7929
  15. 2360
  16. 1278
  17. 3224
  18. 456
  19. 1728
  20. 1419
  21. 1100
  22. 2643
  23. 484
  24. 3812
  25. 2790
  26. 2736
  27. 1324
  28. 2204
  29. 2937
  30. 1557
  31. 1029
  32. 6342
  33. 4767
  34. 8712
  35. 1630
  36. 3264
  37. 3204
  38. 1575
  39. 2485
  40. 4695

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