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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 20 · 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. 1.791 × 9 =
  2. 2.162 × 3 =
  3. 3.506 × 3 =
  4. 4.963 × 4 =
  5. 5.519 × 4 =
  6. 6.456 × 9 =
  7. 7.773 × 8 =
  8. 8.268 × 9 =
  9. 9.698 × 4 =
  10. 10.474 × 6 =
  11. 11.831 × 5 =
  12. 12.655 × 7 =
  13. 13.381 × 5 =
  14. 14.138 × 4 =
  15. 15.496 × 7 =
  16. 16.931 × 8 =
  17. 17.761 × 6 =
  18. 18.974 × 9 =
  19. 19.116 × 6 =
  20. 20.211 × 3 =
  21. 21.141 × 5 =
  22. 22.613 × 7 =
  23. 23.601 × 5 =
  24. 24.305 × 6 =
  25. 25.201 × 9 =
  26. 26.273 × 6 =
  27. 27.945 × 5 =
  28. 28.707 × 7 =
  29. 29.518 × 3 =
  30. 30.828 × 6 =
  31. 31.642 × 5 =
  32. 32.588 × 7 =
  33. 33.586 × 8 =
  34. 34.368 × 8 =
  35. 35.376 × 8 =
  36. 36.321 × 5 =
  37. 37.535 × 5 =
  38. 38.325 × 7 =
  39. 39.245 × 4 =
  40. 40.676 × 7 =

Answer key

  1. 7119
  2. 486
  3. 1518
  4. 3852
  5. 2076
  6. 4104
  7. 6184
  8. 2412
  9. 2792
  10. 2844
  11. 4155
  12. 4585
  13. 1905
  14. 552
  15. 3472
  16. 7448
  17. 4566
  18. 8766
  19. 696
  20. 633
  21. 705
  22. 4291
  23. 3005
  24. 1830
  25. 1809
  26. 1638
  27. 4725
  28. 4949
  29. 1554
  30. 4968
  31. 3210
  32. 4116
  33. 4688
  34. 2944
  35. 3008
  36. 1605
  37. 2675
  38. 2275
  39. 980
  40. 4732

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