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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 55 · 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. 1.156 × 4 =
  2. 2.207 × 7 =
  3. 3.757 × 6 =
  4. 4.236 × 4 =
  5. 5.164 × 4 =
  6. 6.936 × 3 =
  7. 7.217 × 7 =
  8. 8.761 × 8 =
  9. 9.763 × 7 =
  10. 10.565 × 3 =
  11. 11.565 × 7 =
  12. 12.277 × 8 =
  13. 13.742 × 7 =
  14. 14.421 × 4 =
  15. 15.985 × 6 =
  16. 16.325 × 7 =
  17. 17.142 × 9 =
  18. 18.586 × 8 =
  19. 19.371 × 8 =
  20. 20.641 × 3 =
  21. 21.466 × 4 =
  22. 22.787 × 9 =
  23. 23.161 × 3 =
  24. 24.911 × 3 =
  25. 25.288 × 9 =
  26. 26.611 × 4 =
  27. 27.602 × 6 =
  28. 28.284 × 8 =
  29. 29.271 × 5 =
  30. 30.408 × 6 =
  31. 31.359 × 7 =
  32. 32.741 × 7 =
  33. 33.513 × 6 =
  34. 34.602 × 4 =
  35. 35.509 × 8 =
  36. 36.681 × 5 =
  37. 37.396 × 9 =
  38. 38.734 × 4 =
  39. 39.371 × 4 =
  40. 40.841 × 7 =

Answer key

  1. 624
  2. 1449
  3. 4542
  4. 944
  5. 656
  6. 2808
  7. 1519
  8. 6088
  9. 5341
  10. 1695
  11. 3955
  12. 2216
  13. 5194
  14. 1684
  15. 5910
  16. 2275
  17. 1278
  18. 4688
  19. 2968
  20. 1923
  21. 1864
  22. 7083
  23. 483
  24. 2733
  25. 2592
  26. 2444
  27. 3612
  28. 2272
  29. 1355
  30. 2448
  31. 2513
  32. 5187
  33. 3078
  34. 2408
  35. 4072
  36. 3405
  37. 3564
  38. 2936
  39. 1484
  40. 5887

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