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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 940 · 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. 1.4 × 9 =
  2. 2.13 × 19 =
  3. 3.9 × 99 =
  4. 4.39 × 98 =
  5. 5.13 × 9 =
  6. 6.10 × 49 =
  7. 7.15 × 98 =
  8. 8.10 × 19 =
  9. 9.3 × 9 =
  10. 10.14 × 19 =
  11. 11.10 × 29 =
  12. 12.8 × 29 =
  13. 13.12 × 49 =
  14. 14.11 × 99 =
  15. 15.9 × 9 =
  16. 16.6 × 29 =
  17. 17.4 × 9 =
  18. 18.6 × 98 =
  19. 19.13 × 19 =
  20. 20.12 × 9 =
  21. 21.9 × 9 =
  22. 22.15 × 29 =
  23. 23.5 × 49 =
  24. 24.12 × 98 =
  25. 25.9 × 98 =
  26. 26.14 × 49 =
  27. 27.30 × 98 =
  28. 28.11 × 29 =
  29. 29.14 × 29 =
  30. 30.11 × 98 =
  31. 31.10 × 49 =
  32. 32.14 × 29 =
  33. 33.9 × 29 =
  34. 34.13 × 49 =
  35. 35.3 × 49 =
  36. 36.11 × 9 =
  37. 37.13 × 49 =
  38. 38.3 × 9 =
  39. 39.7 × 49 =
  40. 40.15 × 19 =

Answer key

  1. 36
  2. 247
  3. 891
  4. 3822
  5. 117
  6. 490
  7. 1470
  8. 190
  9. 27
  10. 266
  11. 290
  12. 232
  13. 588
  14. 1089
  15. 81
  16. 174
  17. 36
  18. 588
  19. 247
  20. 108
  21. 81
  22. 435
  23. 245
  24. 1176
  25. 882
  26. 686
  27. 2940
  28. 319
  29. 406
  30. 1078
  31. 490
  32. 406
  33. 261
  34. 637
  35. 147
  36. 99
  37. 637
  38. 27
  39. 343
  40. 285

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