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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 638 · 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. 1.149 × 7 =
  2. 2.607 × 7 =
  3. 3.432 × 9 =
  4. 4.636 × 9 =
  5. 5.857 × 4 =
  6. 6.981 × 4 =
  7. 7.812 × 7 =
  8. 8.722 × 5 =
  9. 9.757 × 8 =
  10. 10.817 × 3 =
  11. 11.582 × 7 =
  12. 12.943 × 4 =
  13. 13.516 × 3 =
  14. 14.441 × 8 =
  15. 15.699 × 6 =
  16. 16.476 × 4 =
  17. 17.324 × 5 =
  18. 18.126 × 4 =
  19. 19.255 × 9 =
  20. 20.792 × 4 =
  21. 21.455 × 8 =
  22. 22.215 × 9 =
  23. 23.417 × 9 =
  24. 24.424 × 7 =
  25. 25.931 × 9 =
  26. 26.885 × 5 =
  27. 27.434 × 9 =
  28. 28.675 × 4 =
  29. 29.606 × 8 =
  30. 30.334 × 4 =
  31. 31.983 × 4 =
  32. 32.498 × 6 =
  33. 33.738 × 5 =
  34. 34.941 × 3 =
  35. 35.832 × 6 =
  36. 36.371 × 7 =
  37. 37.742 × 3 =
  38. 38.223 × 3 =
  39. 39.581 × 8 =
  40. 40.219 × 5 =

Answer key

  1. 1043
  2. 4249
  3. 3888
  4. 5724
  5. 3428
  6. 3924
  7. 5684
  8. 3610
  9. 6056
  10. 2451
  11. 4074
  12. 3772
  13. 1548
  14. 3528
  15. 4194
  16. 1904
  17. 1620
  18. 504
  19. 2295
  20. 3168
  21. 3640
  22. 1935
  23. 3753
  24. 2968
  25. 8379
  26. 4425
  27. 3906
  28. 2700
  29. 4848
  30. 1336
  31. 3932
  32. 2988
  33. 3690
  34. 2823
  35. 4992
  36. 2597
  37. 2226
  38. 669
  39. 4648
  40. 1095

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