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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 479 · 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. 1.411 × 3 =
  2. 2.294 × 4 =
  3. 3.272 × 9 =
  4. 4.578 × 4 =
  5. 5.454 × 4 =
  6. 6.146 × 4 =
  7. 7.286 × 5 =
  8. 8.351 × 3 =
  9. 9.946 × 5 =
  10. 10.256 × 5 =
  11. 11.481 × 9 =
  12. 12.348 × 9 =
  13. 13.152 × 6 =
  14. 14.672 × 9 =
  15. 15.477 × 8 =
  16. 16.175 × 5 =
  17. 17.608 × 8 =
  18. 18.675 × 4 =
  19. 19.293 × 5 =
  20. 20.394 × 3 =
  21. 21.698 × 9 =
  22. 22.383 × 8 =
  23. 23.266 × 6 =
  24. 24.611 × 7 =
  25. 25.563 × 7 =
  26. 26.806 × 3 =
  27. 27.365 × 7 =
  28. 28.572 × 5 =
  29. 29.702 × 5 =
  30. 30.479 × 4 =
  31. 31.736 × 8 =
  32. 32.508 × 5 =
  33. 33.333 × 4 =
  34. 34.959 × 5 =
  35. 35.198 × 4 =
  36. 36.625 × 8 =
  37. 37.423 × 8 =
  38. 38.676 × 3 =
  39. 39.728 × 4 =
  40. 40.145 × 8 =

Answer key

  1. 1233
  2. 1176
  3. 2448
  4. 2312
  5. 1816
  6. 584
  7. 1430
  8. 1053
  9. 4730
  10. 1280
  11. 4329
  12. 3132
  13. 912
  14. 6048
  15. 3816
  16. 875
  17. 4864
  18. 2700
  19. 1465
  20. 1182
  21. 6282
  22. 3064
  23. 1596
  24. 4277
  25. 3941
  26. 2418
  27. 2555
  28. 2860
  29. 3510
  30. 1916
  31. 5888
  32. 2540
  33. 1332
  34. 4795
  35. 792
  36. 5000
  37. 3384
  38. 2028
  39. 2912
  40. 1160

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