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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 433 · 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. 1.529 × 7 =
  2. 2.253 × 7 =
  3. 3.355 × 9 =
  4. 4.639 × 4 =
  5. 5.811 × 3 =
  6. 6.235 × 8 =
  7. 7.899 × 3 =
  8. 8.339 × 9 =
  9. 9.271 × 3 =
  10. 10.726 × 4 =
  11. 11.205 × 9 =
  12. 12.138 × 8 =
  13. 13.221 × 7 =
  14. 14.416 × 8 =
  15. 15.966 × 7 =
  16. 16.121 × 3 =
  17. 17.524 × 3 =
  18. 18.981 × 4 =
  19. 19.597 × 8 =
  20. 20.725 × 4 =
  21. 21.765 × 4 =
  22. 22.608 × 3 =
  23. 23.721 × 9 =
  24. 24.281 × 4 =
  25. 25.289 × 4 =
  26. 26.458 × 5 =
  27. 27.535 × 6 =
  28. 28.983 × 9 =
  29. 29.314 × 3 =
  30. 30.275 × 8 =
  31. 31.419 × 7 =
  32. 32.741 × 9 =
  33. 33.191 × 7 =
  34. 34.246 × 6 =
  35. 35.163 × 9 =
  36. 36.673 × 3 =
  37. 37.843 × 7 =
  38. 38.237 × 6 =
  39. 39.317 × 3 =
  40. 40.143 × 3 =

Answer key

  1. 3703
  2. 1771
  3. 3195
  4. 2556
  5. 2433
  6. 1880
  7. 2697
  8. 3051
  9. 813
  10. 2904
  11. 1845
  12. 1104
  13. 1547
  14. 3328
  15. 6762
  16. 363
  17. 1572
  18. 3924
  19. 4776
  20. 2900
  21. 3060
  22. 1824
  23. 6489
  24. 1124
  25. 1156
  26. 2290
  27. 3210
  28. 8847
  29. 942
  30. 2200
  31. 2933
  32. 6669
  33. 1337
  34. 1476
  35. 1467
  36. 2019
  37. 5901
  38. 1422
  39. 951
  40. 429

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