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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 78 · 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. 1.182 × 9 =
  2. 2.491 × 9 =
  3. 3.925 × 5 =
  4. 4.796 × 4 =
  5. 5.821 × 5 =
  6. 6.457 × 9 =
  7. 7.932 × 4 =
  8. 8.434 × 3 =
  9. 9.208 × 8 =
  10. 10.359 × 7 =
  11. 11.837 × 7 =
  12. 12.355 × 6 =
  13. 13.203 × 3 =
  14. 14.216 × 4 =
  15. 15.679 × 8 =
  16. 16.291 × 5 =
  17. 17.639 × 5 =
  18. 18.986 × 9 =
  19. 19.672 × 5 =
  20. 20.951 × 3 =
  21. 21.722 × 9 =
  22. 22.735 × 5 =
  23. 23.741 × 3 =
  24. 24.979 × 5 =
  25. 25.419 × 3 =
  26. 26.221 × 3 =
  27. 27.713 × 4 =
  28. 28.552 × 7 =
  29. 29.972 × 7 =
  30. 30.809 × 8 =
  31. 31.644 × 4 =
  32. 32.116 × 3 =
  33. 33.129 × 9 =
  34. 34.139 × 9 =
  35. 35.126 × 4 =
  36. 36.355 × 8 =
  37. 37.557 × 3 =
  38. 38.525 × 6 =
  39. 39.727 × 3 =
  40. 40.746 × 4 =

Answer key

  1. 1638
  2. 4419
  3. 4625
  4. 3184
  5. 4105
  6. 4113
  7. 3728
  8. 1302
  9. 1664
  10. 2513
  11. 5859
  12. 2130
  13. 609
  14. 864
  15. 5432
  16. 1455
  17. 3195
  18. 8874
  19. 3360
  20. 2853
  21. 6498
  22. 3675
  23. 2223
  24. 4895
  25. 1257
  26. 663
  27. 2852
  28. 3864
  29. 6804
  30. 6472
  31. 2576
  32. 348
  33. 1161
  34. 1251
  35. 504
  36. 2840
  37. 1671
  38. 3150
  39. 2181
  40. 2984

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