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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 38 · 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. 1.153 × 3 =
  2. 2.125 × 6 =
  3. 3.978 × 3 =
  4. 4.499 × 3 =
  5. 5.164 × 7 =
  6. 6.765 × 5 =
  7. 7.838 × 9 =
  8. 8.285 × 7 =
  9. 9.298 × 5 =
  10. 10.877 × 3 =
  11. 11.766 × 7 =
  12. 12.486 × 8 =
  13. 13.797 × 9 =
  14. 14.816 × 5 =
  15. 15.675 × 3 =
  16. 16.625 × 9 =
  17. 17.325 × 3 =
  18. 18.251 × 4 =
  19. 19.558 × 8 =
  20. 20.217 × 3 =
  21. 21.799 × 5 =
  22. 22.536 × 4 =
  23. 23.195 × 6 =
  24. 24.785 × 7 =
  25. 25.629 × 3 =
  26. 26.255 × 8 =
  27. 27.977 × 9 =
  28. 28.324 × 3 =
  29. 29.904 × 8 =
  30. 30.618 × 5 =
  31. 31.863 × 5 =
  32. 32.391 × 3 =
  33. 33.981 × 7 =
  34. 34.394 × 8 =
  35. 35.448 × 8 =
  36. 36.169 × 9 =
  37. 37.371 × 4 =
  38. 38.401 × 9 =
  39. 39.254 × 5 =
  40. 40.465 × 9 =

Answer key

  1. 459
  2. 750
  3. 2934
  4. 1497
  5. 1148
  6. 3825
  7. 7542
  8. 1995
  9. 1490
  10. 2631
  11. 5362
  12. 3888
  13. 7173
  14. 4080
  15. 2025
  16. 5625
  17. 975
  18. 1004
  19. 4464
  20. 651
  21. 3995
  22. 2144
  23. 1170
  24. 5495
  25. 1887
  26. 2040
  27. 8793
  28. 972
  29. 7232
  30. 3090
  31. 4315
  32. 1173
  33. 6867
  34. 3152
  35. 3584
  36. 1521
  37. 1484
  38. 3609
  39. 1270
  40. 4185

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