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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 875 · 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. 1.145 × 5 =
  2. 2.269 × 8 =
  3. 3.227 × 9 =
  4. 4.871 × 8 =
  5. 5.662 × 5 =
  6. 6.234 × 4 =
  7. 7.452 × 9 =
  8. 8.124 × 3 =
  9. 9.455 × 8 =
  10. 10.638 × 9 =
  11. 11.735 × 7 =
  12. 12.812 × 8 =
  13. 13.453 × 6 =
  14. 14.373 × 7 =
  15. 15.689 × 4 =
  16. 16.617 × 4 =
  17. 17.141 × 3 =
  18. 18.294 × 9 =
  19. 19.142 × 5 =
  20. 20.535 × 9 =
  21. 21.355 × 7 =
  22. 22.175 × 8 =
  23. 23.202 × 9 =
  24. 24.392 × 8 =
  25. 25.306 × 3 =
  26. 26.271 × 8 =
  27. 27.794 × 4 =
  28. 28.411 × 9 =
  29. 29.761 × 7 =
  30. 30.899 × 4 =
  31. 31.321 × 6 =
  32. 32.164 × 7 =
  33. 33.426 × 7 =
  34. 34.453 × 4 =
  35. 35.377 × 7 =
  36. 36.416 × 3 =
  37. 37.599 × 6 =
  38. 38.584 × 3 =
  39. 39.784 × 4 =
  40. 40.816 × 6 =

Answer key

  1. 725
  2. 2152
  3. 2043
  4. 6968
  5. 3310
  6. 936
  7. 4068
  8. 372
  9. 3640
  10. 5742
  11. 5145
  12. 6496
  13. 2718
  14. 2611
  15. 2756
  16. 2468
  17. 423
  18. 2646
  19. 710
  20. 4815
  21. 2485
  22. 1400
  23. 1818
  24. 3136
  25. 918
  26. 2168
  27. 3176
  28. 3699
  29. 5327
  30. 3596
  31. 1926
  32. 1148
  33. 2982
  34. 1812
  35. 2639
  36. 1248
  37. 3594
  38. 1752
  39. 3136
  40. 4896

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