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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 258 · 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. 1.329 × 7 =
  2. 2.729 × 9 =
  3. 3.668 × 5 =
  4. 4.979 × 4 =
  5. 5.614 × 6 =
  6. 6.686 × 9 =
  7. 7.167 × 5 =
  8. 8.452 × 3 =
  9. 9.234 × 6 =
  10. 10.231 × 8 =
  11. 11.643 × 5 =
  12. 12.601 × 6 =
  13. 13.749 × 3 =
  14. 14.575 × 3 =
  15. 15.306 × 8 =
  16. 16.745 × 5 =
  17. 17.938 × 7 =
  18. 18.824 × 8 =
  19. 19.144 × 3 =
  20. 20.285 × 9 =
  21. 21.403 × 9 =
  22. 22.589 × 8 =
  23. 23.409 × 5 =
  24. 24.305 × 7 =
  25. 25.652 × 4 =
  26. 26.554 × 7 =
  27. 27.733 × 6 =
  28. 28.301 × 3 =
  29. 29.987 × 9 =
  30. 30.395 × 5 =
  31. 31.193 × 5 =
  32. 32.481 × 8 =
  33. 33.345 × 3 =
  34. 34.202 × 6 =
  35. 35.781 × 6 =
  36. 36.145 × 7 =
  37. 37.893 × 4 =
  38. 38.989 × 4 =
  39. 39.791 × 8 =
  40. 40.958 × 4 =

Answer key

  1. 2303
  2. 6561
  3. 3340
  4. 3916
  5. 3684
  6. 6174
  7. 835
  8. 1356
  9. 1404
  10. 1848
  11. 3215
  12. 3606
  13. 2247
  14. 1725
  15. 2448
  16. 3725
  17. 6566
  18. 6592
  19. 432
  20. 2565
  21. 3627
  22. 4712
  23. 2045
  24. 2135
  25. 2608
  26. 3878
  27. 4398
  28. 903
  29. 8883
  30. 1975
  31. 965
  32. 3848
  33. 1035
  34. 1212
  35. 4686
  36. 1015
  37. 3572
  38. 3956
  39. 6328
  40. 3832

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