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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 425 · 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. 1.205 × 4 =
  2. 2.809 × 3 =
  3. 3.245 × 3 =
  4. 4.357 × 7 =
  5. 5.864 × 4 =
  6. 6.616 × 6 =
  7. 7.203 × 6 =
  8. 8.824 × 5 =
  9. 9.313 × 5 =
  10. 10.901 × 9 =
  11. 11.437 × 3 =
  12. 12.541 × 3 =
  13. 13.285 × 4 =
  14. 14.577 × 8 =
  15. 15.349 × 7 =
  16. 16.765 × 3 =
  17. 17.199 × 5 =
  18. 18.453 × 6 =
  19. 19.181 × 3 =
  20. 20.451 × 7 =
  21. 21.628 × 4 =
  22. 22.379 × 3 =
  23. 23.403 × 6 =
  24. 24.164 × 7 =
  25. 25.395 × 6 =
  26. 26.565 × 4 =
  27. 27.347 × 8 =
  28. 28.123 × 7 =
  29. 29.913 × 5 =
  30. 30.258 × 7 =
  31. 31.273 × 5 =
  32. 32.921 × 8 =
  33. 33.423 × 7 =
  34. 34.441 × 9 =
  35. 35.182 × 4 =
  36. 36.681 × 3 =
  37. 37.293 × 8 =
  38. 38.465 × 7 =
  39. 39.671 × 6 =
  40. 40.564 × 4 =

Answer key

  1. 820
  2. 2427
  3. 735
  4. 2499
  5. 3456
  6. 3696
  7. 1218
  8. 4120
  9. 1565
  10. 8109
  11. 1311
  12. 1623
  13. 1140
  14. 4616
  15. 2443
  16. 2295
  17. 995
  18. 2718
  19. 543
  20. 3157
  21. 2512
  22. 1137
  23. 2418
  24. 1148
  25. 2370
  26. 2260
  27. 2776
  28. 861
  29. 4565
  30. 1806
  31. 1365
  32. 7368
  33. 2961
  34. 3969
  35. 728
  36. 2043
  37. 2344
  38. 3255
  39. 4026
  40. 2256

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