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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 621 · 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. 1.231 × 4 =
  2. 2.732 × 9 =
  3. 3.422 × 6 =
  4. 4.174 × 7 =
  5. 5.365 × 9 =
  6. 6.879 × 4 =
  7. 7.691 × 5 =
  8. 8.925 × 7 =
  9. 9.406 × 4 =
  10. 10.793 × 9 =
  11. 11.193 × 7 =
  12. 12.761 × 8 =
  13. 13.585 × 8 =
  14. 14.618 × 4 =
  15. 15.726 × 7 =
  16. 16.535 × 3 =
  17. 17.205 × 5 =
  18. 18.119 × 9 =
  19. 19.651 × 5 =
  20. 20.818 × 7 =
  21. 21.125 × 6 =
  22. 22.511 × 8 =
  23. 23.862 × 4 =
  24. 24.222 × 8 =
  25. 25.641 × 8 =
  26. 26.191 × 5 =
  27. 27.525 × 6 =
  28. 28.755 × 7 =
  29. 29.713 × 7 =
  30. 30.682 × 6 =
  31. 31.918 × 3 =
  32. 32.955 × 3 =
  33. 33.598 × 9 =
  34. 34.291 × 9 =
  35. 35.704 × 9 =
  36. 36.439 × 7 =
  37. 37.332 × 6 =
  38. 38.428 × 4 =
  39. 39.782 × 4 =
  40. 40.725 × 8 =

Answer key

  1. 924
  2. 6588
  3. 2532
  4. 1218
  5. 3285
  6. 3516
  7. 3455
  8. 6475
  9. 1624
  10. 7137
  11. 1351
  12. 6088
  13. 4680
  14. 2472
  15. 5082
  16. 1605
  17. 1025
  18. 1071
  19. 3255
  20. 5726
  21. 750
  22. 4088
  23. 3448
  24. 1776
  25. 5128
  26. 955
  27. 3150
  28. 5285
  29. 4991
  30. 4092
  31. 2754
  32. 2865
  33. 5382
  34. 2619
  35. 6336
  36. 3073
  37. 1992
  38. 1712
  39. 3128
  40. 5800

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