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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 371 · 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. 1.124 × 3 =
  2. 2.435 × 3 =
  3. 3.449 × 5 =
  4. 4.818 × 5 =
  5. 5.113 × 7 =
  6. 6.191 × 3 =
  7. 7.396 × 3 =
  8. 8.406 × 5 =
  9. 9.221 × 5 =
  10. 10.894 × 9 =
  11. 11.224 × 8 =
  12. 12.858 × 8 =
  13. 13.233 × 7 =
  14. 14.398 × 7 =
  15. 15.283 × 9 =
  16. 16.267 × 4 =
  17. 17.716 × 5 =
  18. 18.875 × 3 =
  19. 19.981 × 9 =
  20. 20.886 × 6 =
  21. 21.241 × 3 =
  22. 22.219 × 4 =
  23. 23.326 × 9 =
  24. 24.732 × 6 =
  25. 25.233 × 6 =
  26. 26.223 × 8 =
  27. 27.443 × 8 =
  28. 28.955 × 5 =
  29. 29.512 × 3 =
  30. 30.724 × 6 =
  31. 31.801 × 6 =
  32. 32.839 × 9 =
  33. 33.345 × 9 =
  34. 34.472 × 8 =
  35. 35.817 × 9 =
  36. 36.565 × 9 =
  37. 37.779 × 4 =
  38. 38.693 × 9 =
  39. 39.705 × 6 =
  40. 40.315 × 7 =

Answer key

  1. 372
  2. 1305
  3. 2245
  4. 4090
  5. 791
  6. 573
  7. 1188
  8. 2030
  9. 1105
  10. 8046
  11. 1792
  12. 6864
  13. 1631
  14. 2786
  15. 2547
  16. 1068
  17. 3580
  18. 2625
  19. 8829
  20. 5316
  21. 723
  22. 876
  23. 2934
  24. 4392
  25. 1398
  26. 1784
  27. 3544
  28. 4775
  29. 1536
  30. 4344
  31. 4806
  32. 7551
  33. 3105
  34. 3776
  35. 7353
  36. 5085
  37. 3116
  38. 6237
  39. 4230
  40. 2205

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