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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 734 · 40 questions
TalentJR

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

NameDateTime takenScore ___ / 40
  1. 1.9 × 49 =
  2. 2.10 × 19 =
  3. 3.36 × 98 =
  4. 4.14 × 19 =
  5. 5.13 × 49 =
  6. 6.14 × 49 =
  7. 7.10 × 49 =
  8. 8.7 × 99 =
  9. 9.7 × 49 =
  10. 10.32 × 98 =
  11. 11.5 × 98 =
  12. 12.5 × 29 =
  13. 13.7 × 29 =
  14. 14.13 × 49 =
  15. 15.6 × 19 =
  16. 16.5 × 49 =
  17. 17.8 × 19 =
  18. 18.18 × 99 =
  19. 19.30 × 99 =
  20. 20.6 × 9 =
  21. 21.6 × 9 =
  22. 22.14 × 19 =
  23. 23.13 × 29 =
  24. 24.8 × 19 =
  25. 25.3 × 29 =
  26. 26.24 × 98 =
  27. 27.8 × 19 =
  28. 28.14 × 29 =
  29. 29.5 × 9 =
  30. 30.23 × 98 =
  31. 31.7 × 19 =
  32. 32.14 × 49 =
  33. 33.14 × 29 =
  34. 34.8 × 19 =
  35. 35.26 × 98 =
  36. 36.9 × 19 =
  37. 37.15 × 19 =
  38. 38.3 × 29 =
  39. 39.13 × 29 =
  40. 40.4 × 29 =

Answer key

  1. 441
  2. 190
  3. 3528
  4. 266
  5. 637
  6. 686
  7. 490
  8. 693
  9. 343
  10. 3136
  11. 490
  12. 145
  13. 203
  14. 637
  15. 114
  16. 245
  17. 152
  18. 1782
  19. 2970
  20. 54
  21. 54
  22. 266
  23. 377
  24. 152
  25. 87
  26. 2352
  27. 152
  28. 406
  29. 45
  30. 2254
  31. 133
  32. 686
  33. 406
  34. 152
  35. 2548
  36. 171
  37. 285
  38. 87
  39. 377
  40. 116

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