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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 84 · 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. 1.901 × 3 =
  2. 2.898 × 5 =
  3. 3.877 × 9 =
  4. 4.617 × 3 =
  5. 5.371 × 3 =
  6. 6.139 × 9 =
  7. 7.926 × 8 =
  8. 8.902 × 3 =
  9. 9.386 × 6 =
  10. 10.503 × 3 =
  11. 11.168 × 5 =
  12. 12.122 × 4 =
  13. 13.133 × 5 =
  14. 14.855 × 7 =
  15. 15.462 × 9 =
  16. 16.191 × 3 =
  17. 17.553 × 8 =
  18. 18.301 × 7 =
  19. 19.967 × 7 =
  20. 20.734 × 9 =
  21. 21.176 × 4 =
  22. 22.261 × 5 =
  23. 23.211 × 5 =
  24. 24.744 × 8 =
  25. 25.147 × 3 =
  26. 26.643 × 8 =
  27. 27.853 × 5 =
  28. 28.889 × 4 =
  29. 29.719 × 3 =
  30. 30.506 × 8 =
  31. 31.859 × 8 =
  32. 32.211 × 3 =
  33. 33.796 × 5 =
  34. 34.431 × 7 =
  35. 35.319 × 4 =
  36. 36.572 × 7 =
  37. 37.124 × 7 =
  38. 38.224 × 4 =
  39. 39.508 × 3 =
  40. 40.921 × 4 =

Answer key

  1. 2703
  2. 4490
  3. 7893
  4. 1851
  5. 1113
  6. 1251
  7. 7408
  8. 2706
  9. 2316
  10. 1509
  11. 840
  12. 488
  13. 665
  14. 5985
  15. 4158
  16. 573
  17. 4424
  18. 2107
  19. 6769
  20. 6606
  21. 704
  22. 1305
  23. 1055
  24. 5952
  25. 441
  26. 5144
  27. 4265
  28. 3556
  29. 2157
  30. 4048
  31. 6872
  32. 633
  33. 3980
  34. 3017
  35. 1276
  36. 4004
  37. 868
  38. 896
  39. 1524
  40. 3684

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