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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 135 · 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. 1.503 × 7 =
  2. 2.358 × 8 =
  3. 3.341 × 6 =
  4. 4.623 × 4 =
  5. 5.504 × 7 =
  6. 6.782 × 4 =
  7. 7.946 × 8 =
  8. 8.609 × 7 =
  9. 9.205 × 3 =
  10. 10.274 × 6 =
  11. 11.985 × 9 =
  12. 12.558 × 5 =
  13. 13.831 × 4 =
  14. 14.548 × 4 =
  15. 15.241 × 4 =
  16. 16.972 × 5 =
  17. 17.129 × 7 =
  18. 18.321 × 5 =
  19. 19.839 × 4 =
  20. 20.471 × 8 =
  21. 21.615 × 9 =
  22. 22.729 × 3 =
  23. 23.261 × 7 =
  24. 24.713 × 4 =
  25. 25.396 × 5 =
  26. 26.492 × 8 =
  27. 27.695 × 4 =
  28. 28.303 × 4 =
  29. 29.439 × 6 =
  30. 30.949 × 5 =
  31. 31.186 × 7 =
  32. 32.779 × 8 =
  33. 33.123 × 3 =
  34. 34.931 × 5 =
  35. 35.684 × 4 =
  36. 36.381 × 8 =
  37. 37.271 × 6 =
  38. 38.966 × 8 =
  39. 39.572 × 3 =
  40. 40.705 × 7 =

Answer key

  1. 3521
  2. 2864
  3. 2046
  4. 2492
  5. 3528
  6. 3128
  7. 7568
  8. 4263
  9. 615
  10. 1644
  11. 8865
  12. 2790
  13. 3324
  14. 2192
  15. 964
  16. 4860
  17. 903
  18. 1605
  19. 3356
  20. 3768
  21. 5535
  22. 2187
  23. 1827
  24. 2852
  25. 1980
  26. 3936
  27. 2780
  28. 1212
  29. 2634
  30. 4745
  31. 1302
  32. 6232
  33. 369
  34. 4655
  35. 2736
  36. 3048
  37. 1626
  38. 7728
  39. 1716
  40. 4935

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