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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 342 · 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. 1.824 × 5 =
  2. 2.316 × 4 =
  3. 3.665 × 7 =
  4. 4.329 × 7 =
  5. 5.369 × 3 =
  6. 6.633 × 4 =
  7. 7.143 × 5 =
  8. 8.692 × 5 =
  9. 9.781 × 9 =
  10. 10.552 × 4 =
  11. 11.282 × 5 =
  12. 12.346 × 8 =
  13. 13.615 × 7 =
  14. 14.602 × 9 =
  15. 15.278 × 7 =
  16. 16.723 × 4 =
  17. 17.934 × 4 =
  18. 18.669 × 4 =
  19. 19.632 × 4 =
  20. 20.974 × 8 =
  21. 21.914 × 9 =
  22. 22.726 × 9 =
  23. 23.202 × 7 =
  24. 24.908 × 7 =
  25. 25.965 × 5 =
  26. 26.531 × 8 =
  27. 27.585 × 3 =
  28. 28.298 × 7 =
  29. 29.352 × 6 =
  30. 30.284 × 7 =
  31. 31.468 × 5 =
  32. 32.845 × 9 =
  33. 33.761 × 4 =
  34. 34.879 × 9 =
  35. 35.964 × 4 =
  36. 36.952 × 3 =
  37. 37.859 × 5 =
  38. 38.604 × 3 =
  39. 39.575 × 6 =
  40. 40.415 × 5 =

Answer key

  1. 4120
  2. 1264
  3. 4655
  4. 2303
  5. 1107
  6. 2532
  7. 715
  8. 3460
  9. 7029
  10. 2208
  11. 1410
  12. 2768
  13. 4305
  14. 5418
  15. 1946
  16. 2892
  17. 3736
  18. 2676
  19. 2528
  20. 7792
  21. 8226
  22. 6534
  23. 1414
  24. 6356
  25. 4825
  26. 4248
  27. 1755
  28. 2086
  29. 2112
  30. 1988
  31. 2340
  32. 7605
  33. 3044
  34. 7911
  35. 3856
  36. 2856
  37. 4295
  38. 1812
  39. 3450
  40. 2075

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