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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 172 · 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. 1.388 × 4 =
  2. 2.303 × 7 =
  3. 3.203 × 5 =
  4. 4.482 × 3 =
  5. 5.571 × 7 =
  6. 6.316 × 7 =
  7. 7.468 × 6 =
  8. 8.404 × 5 =
  9. 9.945 × 7 =
  10. 10.249 × 5 =
  11. 11.934 × 5 =
  12. 12.471 × 4 =
  13. 13.572 × 8 =
  14. 14.668 × 6 =
  15. 15.918 × 3 =
  16. 16.566 × 7 =
  17. 17.309 × 6 =
  18. 18.402 × 3 =
  19. 19.676 × 4 =
  20. 20.833 × 6 =
  21. 21.616 × 4 =
  22. 22.511 × 9 =
  23. 23.765 × 3 =
  24. 24.892 × 3 =
  25. 25.184 × 7 =
  26. 26.792 × 6 =
  27. 27.686 × 6 =
  28. 28.468 × 7 =
  29. 29.793 × 9 =
  30. 30.942 × 4 =
  31. 31.698 × 5 =
  32. 32.685 × 9 =
  33. 33.346 × 3 =
  34. 34.905 × 5 =
  35. 35.307 × 4 =
  36. 36.562 × 7 =
  37. 37.228 × 4 =
  38. 38.798 × 8 =
  39. 39.926 × 3 =
  40. 40.151 × 3 =

Answer key

  1. 1552
  2. 2121
  3. 1015
  4. 1446
  5. 3997
  6. 2212
  7. 2808
  8. 2020
  9. 6615
  10. 1245
  11. 4670
  12. 1884
  13. 4576
  14. 4008
  15. 2754
  16. 3962
  17. 1854
  18. 1206
  19. 2704
  20. 4998
  21. 2464
  22. 4599
  23. 2295
  24. 2676
  25. 1288
  26. 4752
  27. 4116
  28. 3276
  29. 7137
  30. 3768
  31. 3490
  32. 6165
  33. 1038
  34. 4525
  35. 1228
  36. 3934
  37. 912
  38. 6384
  39. 2778
  40. 453

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