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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 128 · 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. 1.596 × 7 =
  2. 2.805 × 6 =
  3. 3.911 × 3 =
  4. 4.197 × 8 =
  5. 5.603 × 4 =
  6. 6.828 × 5 =
  7. 7.121 × 7 =
  8. 8.279 × 9 =
  9. 9.656 × 6 =
  10. 10.868 × 5 =
  11. 11.189 × 8 =
  12. 12.979 × 9 =
  13. 13.546 × 8 =
  14. 14.856 × 7 =
  15. 15.615 × 5 =
  16. 16.769 × 4 =
  17. 17.221 × 4 =
  18. 18.857 × 9 =
  19. 19.938 × 4 =
  20. 20.501 × 8 =
  21. 21.151 × 5 =
  22. 22.502 × 4 =
  23. 23.119 × 9 =
  24. 24.369 × 5 =
  25. 25.907 × 8 =
  26. 26.402 × 7 =
  27. 27.136 × 3 =
  28. 28.467 × 6 =
  29. 29.278 × 8 =
  30. 30.949 × 9 =
  31. 31.187 × 5 =
  32. 32.832 × 7 =
  33. 33.478 × 3 =
  34. 34.141 × 4 =
  35. 35.246 × 8 =
  36. 36.851 × 3 =
  37. 37.704 × 6 =
  38. 38.814 × 3 =
  39. 39.611 × 6 =
  40. 40.287 × 6 =

Answer key

  1. 4172
  2. 4830
  3. 2733
  4. 1576
  5. 2412
  6. 4140
  7. 847
  8. 2511
  9. 3936
  10. 4340
  11. 1512
  12. 8811
  13. 4368
  14. 5992
  15. 3075
  16. 3076
  17. 884
  18. 7713
  19. 3752
  20. 4008
  21. 755
  22. 2008
  23. 1071
  24. 1845
  25. 7256
  26. 2814
  27. 408
  28. 2802
  29. 2224
  30. 8541
  31. 935
  32. 5824
  33. 1434
  34. 564
  35. 1968
  36. 2553
  37. 4224
  38. 2442
  39. 3666
  40. 1722

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