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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 640 · 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. 1.661 × 3 =
  2. 2.281 × 5 =
  3. 3.123 × 7 =
  4. 4.255 × 4 =
  5. 5.947 × 9 =
  6. 6.521 × 7 =
  7. 7.467 × 9 =
  8. 8.801 × 7 =
  9. 9.706 × 6 =
  10. 10.509 × 8 =
  11. 11.148 × 3 =
  12. 12.148 × 9 =
  13. 13.328 × 8 =
  14. 14.375 × 9 =
  15. 15.288 × 6 =
  16. 16.491 × 4 =
  17. 17.782 × 3 =
  18. 18.241 × 6 =
  19. 19.281 × 6 =
  20. 20.446 × 9 =
  21. 21.589 × 8 =
  22. 22.321 × 8 =
  23. 23.712 × 7 =
  24. 24.321 × 4 =
  25. 25.797 × 6 =
  26. 26.665 × 3 =
  27. 27.447 × 5 =
  28. 28.892 × 3 =
  29. 29.145 × 6 =
  30. 30.586 × 3 =
  31. 31.291 × 8 =
  32. 32.882 × 6 =
  33. 33.956 × 3 =
  34. 34.989 × 7 =
  35. 35.478 × 5 =
  36. 36.278 × 3 =
  37. 37.528 × 7 =
  38. 38.769 × 5 =
  39. 39.909 × 8 =
  40. 40.408 × 4 =

Answer key

  1. 1983
  2. 1405
  3. 861
  4. 1020
  5. 8523
  6. 3647
  7. 4203
  8. 5607
  9. 4236
  10. 4072
  11. 444
  12. 1332
  13. 2624
  14. 3375
  15. 1728
  16. 1964
  17. 2346
  18. 1446
  19. 1686
  20. 4014
  21. 4712
  22. 2568
  23. 4984
  24. 1284
  25. 4782
  26. 1995
  27. 2235
  28. 2676
  29. 870
  30. 1758
  31. 2328
  32. 5292
  33. 2868
  34. 6923
  35. 2390
  36. 834
  37. 3696
  38. 3845
  39. 7272
  40. 1632

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