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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 814 · 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. 1.901 × 4 =
  2. 2.488 × 4 =
  3. 3.368 × 7 =
  4. 4.789 × 9 =
  5. 5.144 × 3 =
  6. 6.614 × 5 =
  7. 7.405 × 3 =
  8. 8.724 × 4 =
  9. 9.988 × 8 =
  10. 10.373 × 6 =
  11. 11.856 × 3 =
  12. 12.501 × 8 =
  13. 13.982 × 9 =
  14. 14.417 × 3 =
  15. 15.603 × 5 =
  16. 16.824 × 4 =
  17. 17.391 × 7 =
  18. 18.386 × 6 =
  19. 19.281 × 5 =
  20. 20.784 × 3 =
  21. 21.867 × 3 =
  22. 22.627 × 3 =
  23. 23.904 × 4 =
  24. 24.402 × 3 =
  25. 25.819 × 9 =
  26. 26.812 × 7 =
  27. 27.432 × 3 =
  28. 28.332 × 5 =
  29. 29.411 × 6 =
  30. 30.326 × 3 =
  31. 31.432 × 5 =
  32. 32.635 × 8 =
  33. 33.316 × 9 =
  34. 34.491 × 7 =
  35. 35.226 × 4 =
  36. 36.128 × 8 =
  37. 37.961 × 3 =
  38. 38.951 × 5 =
  39. 39.874 × 4 =
  40. 40.138 × 5 =

Answer key

  1. 3604
  2. 1952
  3. 2576
  4. 7101
  5. 432
  6. 3070
  7. 1215
  8. 2896
  9. 7904
  10. 2238
  11. 2568
  12. 4008
  13. 8838
  14. 1251
  15. 3015
  16. 3296
  17. 2737
  18. 2316
  19. 1405
  20. 2352
  21. 2601
  22. 1881
  23. 3616
  24. 1206
  25. 7371
  26. 5684
  27. 1296
  28. 1660
  29. 2466
  30. 978
  31. 2160
  32. 5080
  33. 2844
  34. 3437
  35. 904
  36. 1024
  37. 2883
  38. 4755
  39. 3496
  40. 690

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