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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 619 · 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. 1.512 × 4 =
  2. 2.221 × 3 =
  3. 3.516 × 8 =
  4. 4.408 × 9 =
  5. 5.365 × 4 =
  6. 6.588 × 5 =
  7. 7.342 × 9 =
  8. 8.127 × 6 =
  9. 9.138 × 3 =
  10. 10.139 × 8 =
  11. 11.753 × 7 =
  12. 12.367 × 7 =
  13. 13.575 × 9 =
  14. 14.987 × 6 =
  15. 15.514 × 4 =
  16. 16.839 × 3 =
  17. 17.978 × 4 =
  18. 18.877 × 3 =
  19. 19.758 × 5 =
  20. 20.771 × 7 =
  21. 21.868 × 7 =
  22. 22.827 × 5 =
  23. 23.825 × 4 =
  24. 24.115 × 7 =
  25. 25.604 × 8 =
  26. 26.771 × 4 =
  27. 27.917 × 5 =
  28. 28.282 × 4 =
  29. 29.591 × 4 =
  30. 30.268 × 4 =
  31. 31.926 × 6 =
  32. 32.497 × 4 =
  33. 33.163 × 5 =
  34. 34.907 × 7 =
  35. 35.281 × 8 =
  36. 36.133 × 9 =
  37. 37.517 × 9 =
  38. 38.974 × 4 =
  39. 39.939 × 6 =
  40. 40.908 × 4 =

Answer key

  1. 2048
  2. 663
  3. 4128
  4. 3672
  5. 1460
  6. 2940
  7. 3078
  8. 762
  9. 414
  10. 1112
  11. 5271
  12. 2569
  13. 5175
  14. 5922
  15. 2056
  16. 2517
  17. 3912
  18. 2631
  19. 3790
  20. 5397
  21. 6076
  22. 4135
  23. 3300
  24. 805
  25. 4832
  26. 3084
  27. 4585
  28. 1128
  29. 2364
  30. 1072
  31. 5556
  32. 1988
  33. 815
  34. 6349
  35. 2248
  36. 1197
  37. 4653
  38. 3896
  39. 5634
  40. 3632

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