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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 995 · 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. 1.5 × 29 =
  2. 2.12 × 29 =
  3. 3.7 × 19 =
  4. 4.6 × 9 =
  5. 5.6 × 98 =
  6. 6.14 × 29 =
  7. 7.10 × 19 =
  8. 8.11 × 19 =
  9. 9.10 × 9 =
  10. 10.21 × 99 =
  11. 11.7 × 29 =
  12. 12.35 × 98 =
  13. 13.4 × 9 =
  14. 14.3 × 29 =
  15. 15.8 × 9 =
  16. 16.18 × 98 =
  17. 17.7 × 49 =
  18. 18.9 × 29 =
  19. 19.8 × 9 =
  20. 20.4 × 19 =
  21. 21.14 × 19 =
  22. 22.21 × 99 =
  23. 23.6 × 49 =
  24. 24.12 × 99 =
  25. 25.9 × 29 =
  26. 26.10 × 49 =
  27. 27.24 × 98 =
  28. 28.5 × 29 =
  29. 29.5 × 49 =
  30. 30.11 × 49 =
  31. 31.24 × 98 =
  32. 32.10 × 29 =
  33. 33.10 × 99 =
  34. 34.14 × 19 =
  35. 35.10 × 98 =
  36. 36.5 × 98 =
  37. 37.10 × 29 =
  38. 38.9 × 49 =
  39. 39.11 × 99 =
  40. 40.11 × 19 =

Answer key

  1. 145
  2. 348
  3. 133
  4. 54
  5. 588
  6. 406
  7. 190
  8. 209
  9. 90
  10. 2079
  11. 203
  12. 3430
  13. 36
  14. 87
  15. 72
  16. 1764
  17. 343
  18. 261
  19. 72
  20. 76
  21. 266
  22. 2079
  23. 294
  24. 1188
  25. 261
  26. 490
  27. 2352
  28. 145
  29. 245
  30. 539
  31. 2352
  32. 290
  33. 990
  34. 266
  35. 980
  36. 490
  37. 290
  38. 441
  39. 1089
  40. 209

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