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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 205 · 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. 1.125 × 9 =
  2. 2.405 × 9 =
  3. 3.151 × 7 =
  4. 4.133 × 5 =
  5. 5.916 × 4 =
  6. 6.191 × 6 =
  7. 7.129 × 3 =
  8. 8.716 × 8 =
  9. 9.764 × 4 =
  10. 10.112 × 5 =
  11. 11.743 × 7 =
  12. 12.923 × 8 =
  13. 13.504 × 9 =
  14. 14.191 × 9 =
  15. 15.141 × 3 =
  16. 16.201 × 4 =
  17. 17.583 × 4 =
  18. 18.939 × 8 =
  19. 19.508 × 9 =
  20. 20.311 × 3 =
  21. 21.775 × 6 =
  22. 22.959 × 3 =
  23. 23.607 × 3 =
  24. 24.727 × 6 =
  25. 25.601 × 8 =
  26. 26.837 × 5 =
  27. 27.662 × 4 =
  28. 28.876 × 3 =
  29. 29.833 × 4 =
  30. 30.641 × 6 =
  31. 31.353 × 7 =
  32. 32.322 × 3 =
  33. 33.752 × 7 =
  34. 34.451 × 8 =
  35. 35.538 × 3 =
  36. 36.531 × 8 =
  37. 37.184 × 6 =
  38. 38.968 × 4 =
  39. 39.642 × 5 =
  40. 40.499 × 4 =

Answer key

  1. 1125
  2. 3645
  3. 1057
  4. 665
  5. 3664
  6. 1146
  7. 387
  8. 5728
  9. 3056
  10. 560
  11. 5201
  12. 7384
  13. 4536
  14. 1719
  15. 423
  16. 804
  17. 2332
  18. 7512
  19. 4572
  20. 933
  21. 4650
  22. 2877
  23. 1821
  24. 4362
  25. 4808
  26. 4185
  27. 2648
  28. 2628
  29. 3332
  30. 3846
  31. 2471
  32. 966
  33. 5264
  34. 3608
  35. 1614
  36. 4248
  37. 1104
  38. 3872
  39. 3210
  40. 1996

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