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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 842 · 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. 1.971 × 8 =
  2. 2.131 × 7 =
  3. 3.801 × 3 =
  4. 4.427 × 8 =
  5. 5.871 × 5 =
  6. 6.231 × 6 =
  7. 7.155 × 8 =
  8. 8.141 × 6 =
  9. 9.683 × 9 =
  10. 10.559 × 6 =
  11. 11.685 × 6 =
  12. 12.416 × 9 =
  13. 13.337 × 9 =
  14. 14.626 × 8 =
  15. 15.869 × 6 =
  16. 16.224 × 3 =
  17. 17.117 × 9 =
  18. 18.319 × 4 =
  19. 19.338 × 7 =
  20. 20.903 × 6 =
  21. 21.632 × 5 =
  22. 22.428 × 3 =
  23. 23.484 × 9 =
  24. 24.857 × 4 =
  25. 25.894 × 4 =
  26. 26.297 × 5 =
  27. 27.832 × 8 =
  28. 28.373 × 8 =
  29. 29.231 × 9 =
  30. 30.883 × 4 =
  31. 31.545 × 7 =
  32. 32.302 × 8 =
  33. 33.164 × 7 =
  34. 34.168 × 4 =
  35. 35.288 × 5 =
  36. 36.734 × 3 =
  37. 37.609 × 5 =
  38. 38.921 × 4 =
  39. 39.347 × 9 =
  40. 40.658 × 4 =

Answer key

  1. 7768
  2. 917
  3. 2403
  4. 3416
  5. 4355
  6. 1386
  7. 1240
  8. 846
  9. 6147
  10. 3354
  11. 4110
  12. 3744
  13. 3033
  14. 5008
  15. 5214
  16. 672
  17. 1053
  18. 1276
  19. 2366
  20. 5418
  21. 3160
  22. 1284
  23. 4356
  24. 3428
  25. 3576
  26. 1485
  27. 6656
  28. 2984
  29. 2079
  30. 3532
  31. 3815
  32. 2416
  33. 1148
  34. 672
  35. 1440
  36. 2202
  37. 3045
  38. 3684
  39. 3123
  40. 2632

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