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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 77 · 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. 1.476 × 7 =
  2. 2.249 × 5 =
  3. 3.881 × 4 =
  4. 4.713 × 3 =
  5. 5.731 × 6 =
  6. 6.876 × 7 =
  7. 7.547 × 4 =
  8. 8.167 × 3 =
  9. 9.216 × 6 =
  10. 10.952 × 8 =
  11. 11.251 × 3 =
  12. 12.751 × 6 =
  13. 13.548 × 4 =
  14. 14.464 × 9 =
  15. 15.627 × 8 =
  16. 16.293 × 9 =
  17. 17.192 × 8 =
  18. 18.391 × 7 =
  19. 19.625 × 4 =
  20. 20.159 × 6 =
  21. 21.312 × 9 =
  22. 22.221 × 5 =
  23. 23.903 × 3 =
  24. 24.327 × 6 =
  25. 25.452 × 3 =
  26. 26.398 × 7 =
  27. 27.574 × 7 =
  28. 28.256 × 6 =
  29. 29.114 × 3 =
  30. 30.199 × 3 =
  31. 31.761 × 4 =
  32. 32.831 × 4 =
  33. 33.602 × 7 =
  34. 34.851 × 5 =
  35. 35.925 × 9 =
  36. 36.864 × 4 =
  37. 37.309 × 6 =
  38. 38.335 × 5 =
  39. 39.989 × 5 =
  40. 40.744 × 5 =

Answer key

  1. 3332
  2. 1245
  3. 3524
  4. 2139
  5. 4386
  6. 6132
  7. 2188
  8. 501
  9. 1296
  10. 7616
  11. 753
  12. 4506
  13. 2192
  14. 4176
  15. 5016
  16. 2637
  17. 1536
  18. 2737
  19. 2500
  20. 954
  21. 2808
  22. 1105
  23. 2709
  24. 1962
  25. 1356
  26. 2786
  27. 4018
  28. 1536
  29. 342
  30. 597
  31. 3044
  32. 3324
  33. 4214
  34. 4255
  35. 8325
  36. 3456
  37. 1854
  38. 1675
  39. 4945
  40. 3720

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