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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 600 · 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. 1.486 × 3 =
  2. 2.825 × 8 =
  3. 3.738 × 3 =
  4. 4.706 × 8 =
  5. 5.564 × 7 =
  6. 6.881 × 8 =
  7. 7.909 × 5 =
  8. 8.539 × 9 =
  9. 9.894 × 5 =
  10. 10.709 × 8 =
  11. 11.454 × 3 =
  12. 12.222 × 7 =
  13. 13.489 × 5 =
  14. 14.571 × 7 =
  15. 15.918 × 7 =
  16. 16.507 × 4 =
  17. 17.723 × 6 =
  18. 18.113 × 7 =
  19. 19.717 × 9 =
  20. 20.897 × 7 =
  21. 21.251 × 4 =
  22. 22.248 × 9 =
  23. 23.964 × 9 =
  24. 24.179 × 3 =
  25. 25.192 × 4 =
  26. 26.125 × 6 =
  27. 27.671 × 4 =
  28. 28.176 × 6 =
  29. 29.497 × 7 =
  30. 30.619 × 8 =
  31. 31.815 × 9 =
  32. 32.392 × 5 =
  33. 33.181 × 4 =
  34. 34.121 × 8 =
  35. 35.658 × 9 =
  36. 36.782 × 8 =
  37. 37.274 × 9 =
  38. 38.371 × 4 =
  39. 39.536 × 4 =
  40. 40.325 × 4 =

Answer key

  1. 1458
  2. 6600
  3. 2214
  4. 5648
  5. 3948
  6. 7048
  7. 4545
  8. 4851
  9. 4470
  10. 5672
  11. 1362
  12. 1554
  13. 2445
  14. 3997
  15. 6426
  16. 2028
  17. 4338
  18. 791
  19. 6453
  20. 6279
  21. 1004
  22. 2232
  23. 8676
  24. 537
  25. 768
  26. 750
  27. 2684
  28. 1056
  29. 3479
  30. 4952
  31. 7335
  32. 1960
  33. 724
  34. 968
  35. 5922
  36. 6256
  37. 2466
  38. 1484
  39. 2144
  40. 1300

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