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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 314 · 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. 1.407 × 5 =
  2. 2.888 × 8 =
  3. 3.892 × 6 =
  4. 4.513 × 3 =
  5. 5.591 × 3 =
  6. 6.173 × 5 =
  7. 7.803 × 6 =
  8. 8.878 × 5 =
  9. 9.645 × 7 =
  10. 10.122 × 5 =
  11. 11.371 × 8 =
  12. 12.212 × 7 =
  13. 13.792 × 4 =
  14. 14.351 × 4 =
  15. 15.192 × 9 =
  16. 16.115 × 8 =
  17. 17.219 × 8 =
  18. 18.231 × 4 =
  19. 19.846 × 9 =
  20. 20.141 × 9 =
  21. 21.792 × 3 =
  22. 22.678 × 3 =
  23. 23.459 × 8 =
  24. 24.293 × 8 =
  25. 25.869 × 3 =
  26. 26.252 × 8 =
  27. 27.201 × 4 =
  28. 28.237 × 4 =
  29. 29.783 × 3 =
  30. 30.183 × 8 =
  31. 31.908 × 6 =
  32. 32.414 × 9 =
  33. 33.488 × 8 =
  34. 34.893 × 5 =
  35. 35.319 × 7 =
  36. 36.261 × 4 =
  37. 37.403 × 4 =
  38. 38.538 × 5 =
  39. 39.228 × 6 =
  40. 40.943 × 3 =

Answer key

  1. 2035
  2. 7104
  3. 5352
  4. 1539
  5. 1773
  6. 865
  7. 4818
  8. 4390
  9. 4515
  10. 610
  11. 2968
  12. 1484
  13. 3168
  14. 1404
  15. 1728
  16. 920
  17. 1752
  18. 924
  19. 7614
  20. 1269
  21. 2376
  22. 2034
  23. 3672
  24. 2344
  25. 2607
  26. 2016
  27. 804
  28. 948
  29. 2349
  30. 1464
  31. 5448
  32. 3726
  33. 3904
  34. 4465
  35. 2233
  36. 1044
  37. 1612
  38. 2690
  39. 1368
  40. 2829

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