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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 989 · 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. 1.238 × 6 =
  2. 2.982 × 8 =
  3. 3.248 × 9 =
  4. 4.143 × 3 =
  5. 5.751 × 5 =
  6. 6.239 × 8 =
  7. 7.746 × 3 =
  8. 8.966 × 4 =
  9. 9.212 × 3 =
  10. 10.489 × 4 =
  11. 11.307 × 9 =
  12. 12.487 × 6 =
  13. 13.712 × 3 =
  14. 14.509 × 8 =
  15. 15.698 × 6 =
  16. 16.614 × 3 =
  17. 17.752 × 9 =
  18. 18.351 × 3 =
  19. 19.633 × 4 =
  20. 20.296 × 4 =
  21. 21.521 × 7 =
  22. 22.667 × 8 =
  23. 23.948 × 6 =
  24. 24.179 × 9 =
  25. 25.774 × 3 =
  26. 26.702 × 8 =
  27. 27.154 × 6 =
  28. 28.653 × 8 =
  29. 29.983 × 4 =
  30. 30.141 × 8 =
  31. 31.508 × 4 =
  32. 32.145 × 9 =
  33. 33.611 × 3 =
  34. 34.678 × 8 =
  35. 35.493 × 4 =
  36. 36.399 × 7 =
  37. 37.139 × 4 =
  38. 38.936 × 4 =
  39. 39.169 × 3 =
  40. 40.895 × 4 =

Answer key

  1. 1428
  2. 7856
  3. 2232
  4. 429
  5. 3755
  6. 1912
  7. 2238
  8. 3864
  9. 636
  10. 1956
  11. 2763
  12. 2922
  13. 2136
  14. 4072
  15. 4188
  16. 1842
  17. 6768
  18. 1053
  19. 2532
  20. 1184
  21. 3647
  22. 5336
  23. 5688
  24. 1611
  25. 2322
  26. 5616
  27. 924
  28. 5224
  29. 3932
  30. 1128
  31. 2032
  32. 1305
  33. 1833
  34. 5424
  35. 1972
  36. 2793
  37. 556
  38. 3744
  39. 507
  40. 3580

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