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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 644 · 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. 1.285 × 9 =
  2. 2.421 × 7 =
  3. 3.664 × 8 =
  4. 4.502 × 6 =
  5. 5.761 × 6 =
  6. 6.628 × 4 =
  7. 7.354 × 9 =
  8. 8.625 × 3 =
  9. 9.871 × 4 =
  10. 10.284 × 6 =
  11. 11.679 × 5 =
  12. 12.154 × 6 =
  13. 13.535 × 3 =
  14. 14.171 × 4 =
  15. 15.151 × 3 =
  16. 16.851 × 8 =
  17. 17.281 × 6 =
  18. 18.695 × 3 =
  19. 19.885 × 3 =
  20. 20.686 × 3 =
  21. 21.895 × 3 =
  22. 22.782 × 9 =
  23. 23.742 × 9 =
  24. 24.116 × 6 =
  25. 25.931 × 7 =
  26. 26.755 × 7 =
  27. 27.331 × 6 =
  28. 28.271 × 7 =
  29. 29.183 × 9 =
  30. 30.286 × 6 =
  31. 31.898 × 4 =
  32. 32.367 × 9 =
  33. 33.606 × 3 =
  34. 34.213 × 9 =
  35. 35.343 × 9 =
  36. 36.735 × 3 =
  37. 37.874 × 9 =
  38. 38.533 × 8 =
  39. 39.321 × 7 =
  40. 40.128 × 4 =

Answer key

  1. 2565
  2. 2947
  3. 5312
  4. 3012
  5. 4566
  6. 2512
  7. 3186
  8. 1875
  9. 3484
  10. 1704
  11. 3395
  12. 924
  13. 1605
  14. 684
  15. 453
  16. 6808
  17. 1686
  18. 2085
  19. 2655
  20. 2058
  21. 2685
  22. 7038
  23. 6678
  24. 696
  25. 6517
  26. 5285
  27. 1986
  28. 1897
  29. 1647
  30. 1716
  31. 3592
  32. 3303
  33. 1818
  34. 1917
  35. 3087
  36. 2205
  37. 7866
  38. 4264
  39. 2247
  40. 512

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