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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 810 · 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. 1.428 × 7 =
  2. 2.681 × 8 =
  3. 3.157 × 3 =
  4. 4.139 × 3 =
  5. 5.121 × 4 =
  6. 6.197 × 9 =
  7. 7.312 × 8 =
  8. 8.698 × 5 =
  9. 9.746 × 9 =
  10. 10.155 × 7 =
  11. 11.322 × 5 =
  12. 12.851 × 3 =
  13. 13.536 × 7 =
  14. 14.878 × 5 =
  15. 15.575 × 6 =
  16. 16.471 × 5 =
  17. 17.169 × 4 =
  18. 18.175 × 6 =
  19. 19.471 × 3 =
  20. 20.789 × 5 =
  21. 21.351 × 8 =
  22. 22.279 × 8 =
  23. 23.232 × 4 =
  24. 24.959 × 5 =
  25. 25.423 × 7 =
  26. 26.738 × 4 =
  27. 27.453 × 4 =
  28. 28.743 × 8 =
  29. 29.132 × 5 =
  30. 30.253 × 5 =
  31. 31.291 × 7 =
  32. 32.302 × 3 =
  33. 33.533 × 4 =
  34. 34.791 × 8 =
  35. 35.641 × 3 =
  36. 36.463 × 4 =
  37. 37.894 × 3 =
  38. 38.488 × 5 =
  39. 39.521 × 8 =
  40. 40.921 × 8 =

Answer key

  1. 2996
  2. 5448
  3. 471
  4. 417
  5. 484
  6. 1773
  7. 2496
  8. 3490
  9. 6714
  10. 1085
  11. 1610
  12. 2553
  13. 3752
  14. 4390
  15. 3450
  16. 2355
  17. 676
  18. 1050
  19. 1413
  20. 3945
  21. 2808
  22. 2232
  23. 928
  24. 4795
  25. 2961
  26. 2952
  27. 1812
  28. 5944
  29. 660
  30. 1265
  31. 2037
  32. 906
  33. 2132
  34. 6328
  35. 1923
  36. 1852
  37. 2682
  38. 2440
  39. 4168
  40. 7368

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