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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 400 · 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. 1.471 × 7 =
  2. 2.549 × 3 =
  3. 3.443 × 6 =
  4. 4.814 × 4 =
  5. 5.319 × 8 =
  6. 6.715 × 3 =
  7. 7.508 × 4 =
  8. 8.284 × 4 =
  9. 9.171 × 7 =
  10. 10.769 × 9 =
  11. 11.293 × 8 =
  12. 12.589 × 4 =
  13. 13.329 × 5 =
  14. 14.621 × 7 =
  15. 15.727 × 4 =
  16. 16.316 × 4 =
  17. 17.463 × 3 =
  18. 18.664 × 7 =
  19. 19.831 × 7 =
  20. 20.654 × 3 =
  21. 21.171 × 6 =
  22. 22.665 × 4 =
  23. 23.363 × 7 =
  24. 24.428 × 9 =
  25. 25.474 × 8 =
  26. 26.114 × 7 =
  27. 27.214 × 6 =
  28. 28.291 × 3 =
  29. 29.541 × 9 =
  30. 30.909 × 5 =
  31. 31.821 × 3 =
  32. 32.338 × 8 =
  33. 33.233 × 6 =
  34. 34.513 × 3 =
  35. 35.324 × 6 =
  36. 36.823 × 6 =
  37. 37.627 × 7 =
  38. 38.553 × 8 =
  39. 39.902 × 9 =
  40. 40.141 × 5 =

Answer key

  1. 3297
  2. 1647
  3. 2658
  4. 3256
  5. 2552
  6. 2145
  7. 2032
  8. 1136
  9. 1197
  10. 6921
  11. 2344
  12. 2356
  13. 1645
  14. 4347
  15. 2908
  16. 1264
  17. 1389
  18. 4648
  19. 5817
  20. 1962
  21. 1026
  22. 2660
  23. 2541
  24. 3852
  25. 3792
  26. 798
  27. 1284
  28. 873
  29. 4869
  30. 4545
  31. 2463
  32. 2704
  33. 1398
  34. 1539
  35. 1944
  36. 4938
  37. 4389
  38. 4424
  39. 8118
  40. 705

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