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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 3 · 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. 1.122 × 6 =
  2. 2.421 × 8 =
  3. 3.289 × 5 =
  4. 4.486 × 3 =
  5. 5.922 × 3 =
  6. 6.708 × 7 =
  7. 7.174 × 3 =
  8. 8.312 × 4 =
  9. 9.859 × 8 =
  10. 10.474 × 5 =
  11. 11.862 × 7 =
  12. 12.911 × 9 =
  13. 13.281 × 3 =
  14. 14.123 × 3 =
  15. 15.873 × 8 =
  16. 16.237 × 5 =
  17. 17.381 × 5 =
  18. 18.267 × 5 =
  19. 19.379 × 8 =
  20. 20.329 × 3 =
  21. 21.173 × 3 =
  22. 22.758 × 3 =
  23. 23.697 × 4 =
  24. 24.886 × 4 =
  25. 25.816 × 6 =
  26. 26.978 × 3 =
  27. 27.874 × 9 =
  28. 28.288 × 8 =
  29. 29.665 × 6 =
  30. 30.192 × 4 =
  31. 31.197 × 3 =
  32. 32.835 × 6 =
  33. 33.179 × 9 =
  34. 34.929 × 9 =
  35. 35.164 × 3 =
  36. 36.239 × 5 =
  37. 37.851 × 4 =
  38. 38.953 × 4 =
  39. 39.401 × 5 =
  40. 40.273 × 3 =

Answer key

  1. 732
  2. 3368
  3. 1445
  4. 1458
  5. 2766
  6. 4956
  7. 522
  8. 1248
  9. 6872
  10. 2370
  11. 6034
  12. 8199
  13. 843
  14. 369
  15. 6984
  16. 1185
  17. 1905
  18. 1335
  19. 3032
  20. 987
  21. 519
  22. 2274
  23. 2788
  24. 3544
  25. 4896
  26. 2934
  27. 7866
  28. 2304
  29. 3990
  30. 768
  31. 591
  32. 5010
  33. 1611
  34. 8361
  35. 492
  36. 1195
  37. 3404
  38. 3812
  39. 2005
  40. 819

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