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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 129 · 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. 1.724 × 9 =
  2. 2.976 × 7 =
  3. 3.182 × 7 =
  4. 4.352 × 9 =
  5. 5.478 × 4 =
  6. 6.949 × 9 =
  7. 7.133 × 3 =
  8. 8.889 × 8 =
  9. 9.389 × 7 =
  10. 10.429 × 3 =
  11. 11.454 × 3 =
  12. 12.857 × 3 =
  13. 13.481 × 9 =
  14. 14.847 × 5 =
  15. 15.717 × 4 =
  16. 16.171 × 9 =
  17. 17.855 × 8 =
  18. 18.351 × 4 =
  19. 19.625 × 9 =
  20. 20.123 × 4 =
  21. 21.154 × 7 =
  22. 22.135 × 5 =
  23. 23.975 × 4 =
  24. 24.891 × 6 =
  25. 25.569 × 6 =
  26. 26.276 × 7 =
  27. 27.842 × 8 =
  28. 28.277 × 4 =
  29. 29.212 × 8 =
  30. 30.247 × 3 =
  31. 31.442 × 3 =
  32. 32.482 × 5 =
  33. 33.731 × 4 =
  34. 34.762 × 9 =
  35. 35.696 × 6 =
  36. 36.164 × 9 =
  37. 37.352 × 4 =
  38. 38.293 × 4 =
  39. 39.735 × 6 =
  40. 40.469 × 9 =

Answer key

  1. 6516
  2. 6832
  3. 1274
  4. 3168
  5. 1912
  6. 8541
  7. 399
  8. 7112
  9. 2723
  10. 1287
  11. 1362
  12. 2571
  13. 4329
  14. 4235
  15. 2868
  16. 1539
  17. 6840
  18. 1404
  19. 5625
  20. 492
  21. 1078
  22. 675
  23. 3900
  24. 5346
  25. 3414
  26. 1932
  27. 6736
  28. 1108
  29. 1696
  30. 741
  31. 1326
  32. 2410
  33. 2924
  34. 6858
  35. 4176
  36. 1476
  37. 1408
  38. 1172
  39. 4410
  40. 4221

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