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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 458 · 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. 1.601 × 7 =
  2. 2.127 × 7 =
  3. 3.629 × 5 =
  4. 4.771 × 3 =
  5. 5.721 × 4 =
  6. 6.391 × 8 =
  7. 7.653 × 9 =
  8. 8.729 × 7 =
  9. 9.246 × 5 =
  10. 10.837 × 3 =
  11. 11.336 × 3 =
  12. 12.232 × 7 =
  13. 13.281 × 3 =
  14. 14.283 × 5 =
  15. 15.331 × 4 =
  16. 16.281 × 9 =
  17. 17.338 × 6 =
  18. 18.261 × 5 =
  19. 19.954 × 7 =
  20. 20.126 × 6 =
  21. 21.701 × 4 =
  22. 22.185 × 5 =
  23. 23.581 × 7 =
  24. 24.549 × 9 =
  25. 25.146 × 9 =
  26. 26.178 × 4 =
  27. 27.464 × 6 =
  28. 28.921 × 9 =
  29. 29.227 × 5 =
  30. 30.369 × 8 =
  31. 31.307 × 3 =
  32. 32.315 × 9 =
  33. 33.755 × 9 =
  34. 34.242 × 8 =
  35. 35.436 × 3 =
  36. 36.321 × 4 =
  37. 37.824 × 8 =
  38. 38.942 × 3 =
  39. 39.651 × 5 =
  40. 40.409 × 5 =

Answer key

  1. 4207
  2. 889
  3. 3145
  4. 2313
  5. 2884
  6. 3128
  7. 5877
  8. 5103
  9. 1230
  10. 2511
  11. 1008
  12. 1624
  13. 843
  14. 1415
  15. 1324
  16. 2529
  17. 2028
  18. 1305
  19. 6678
  20. 756
  21. 2804
  22. 925
  23. 4067
  24. 4941
  25. 1314
  26. 712
  27. 2784
  28. 8289
  29. 1135
  30. 2952
  31. 921
  32. 2835
  33. 6795
  34. 1936
  35. 1308
  36. 1284
  37. 6592
  38. 2826
  39. 3255
  40. 2045

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