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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 16 · 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. 1.11 × 19 =
  2. 2.26 × 98 =
  3. 3.27 × 99 =
  4. 4.9 × 9 =
  5. 5.31 × 98 =
  6. 6.6 × 9 =
  7. 7.5 × 49 =
  8. 8.9 × 98 =
  9. 9.13 × 19 =
  10. 10.13 × 9 =
  11. 11.10 × 99 =
  12. 12.3 × 29 =
  13. 13.9 × 49 =
  14. 14.4 × 99 =
  15. 15.6 × 19 =
  16. 16.35 × 98 =
  17. 17.4 × 98 =
  18. 18.10 × 98 =
  19. 19.33 × 98 =
  20. 20.14 × 29 =
  21. 21.15 × 99 =
  22. 22.21 × 98 =
  23. 23.4 × 49 =
  24. 24.4 × 29 =
  25. 25.11 × 19 =
  26. 26.7 × 19 =
  27. 27.3 × 9 =
  28. 28.5 × 29 =
  29. 29.14 × 19 =
  30. 30.16 × 99 =
  31. 31.26 × 98 =
  32. 32.37 × 99 =
  33. 33.13 × 19 =
  34. 34.4 × 49 =
  35. 35.15 × 49 =
  36. 36.21 × 99 =
  37. 37.32 × 99 =
  38. 38.14 × 29 =
  39. 39.27 × 99 =
  40. 40.10 × 9 =

Answer key

  1. 209
  2. 2548
  3. 2673
  4. 81
  5. 3038
  6. 54
  7. 245
  8. 882
  9. 247
  10. 117
  11. 990
  12. 87
  13. 441
  14. 396
  15. 114
  16. 3430
  17. 392
  18. 980
  19. 3234
  20. 406
  21. 1485
  22. 2058
  23. 196
  24. 116
  25. 209
  26. 133
  27. 27
  28. 145
  29. 266
  30. 1584
  31. 2548
  32. 3663
  33. 247
  34. 196
  35. 735
  36. 2079
  37. 3168
  38. 406
  39. 2673
  40. 90

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