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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 75 · 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. 1.935 × 8 =
  2. 2.172 × 5 =
  3. 3.481 × 5 =
  4. 4.556 × 4 =
  5. 5.328 × 5 =
  6. 6.876 × 6 =
  7. 7.512 × 8 =
  8. 8.138 × 7 =
  9. 9.115 × 7 =
  10. 10.204 × 3 =
  11. 11.747 × 8 =
  12. 12.363 × 9 =
  13. 13.531 × 6 =
  14. 14.714 × 3 =
  15. 15.437 × 5 =
  16. 16.721 × 7 =
  17. 17.407 × 5 =
  18. 18.871 × 9 =
  19. 19.151 × 7 =
  20. 20.171 × 4 =
  21. 21.689 × 7 =
  22. 22.526 × 3 =
  23. 23.519 × 3 =
  24. 24.202 × 9 =
  25. 25.955 × 3 =
  26. 26.319 × 7 =
  27. 27.412 × 7 =
  28. 28.553 × 3 =
  29. 29.831 × 7 =
  30. 30.709 × 3 =
  31. 31.978 × 4 =
  32. 32.291 × 3 =
  33. 33.944 × 6 =
  34. 34.615 × 5 =
  35. 35.328 × 4 =
  36. 36.308 × 7 =
  37. 37.429 × 3 =
  38. 38.393 × 5 =
  39. 39.242 × 9 =
  40. 40.541 × 6 =

Answer key

  1. 7480
  2. 860
  3. 2405
  4. 2224
  5. 1640
  6. 5256
  7. 4096
  8. 966
  9. 805
  10. 612
  11. 5976
  12. 3267
  13. 3186
  14. 2142
  15. 2185
  16. 5047
  17. 2035
  18. 7839
  19. 1057
  20. 684
  21. 4823
  22. 1578
  23. 1557
  24. 1818
  25. 2865
  26. 2233
  27. 2884
  28. 1659
  29. 5817
  30. 2127
  31. 3912
  32. 873
  33. 5664
  34. 3075
  35. 1312
  36. 2156
  37. 1287
  38. 1965
  39. 2178
  40. 3246

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