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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 243 · 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. 1.14 × 99 =
  2. 2.3 × 9 =
  3. 3.5 × 19 =
  4. 4.23 × 99 =
  5. 5.7 × 19 =
  6. 6.14 × 9 =
  7. 7.12 × 49 =
  8. 8.5 × 49 =
  9. 9.10 × 9 =
  10. 10.11 × 9 =
  11. 11.8 × 49 =
  12. 12.6 × 9 =
  13. 13.12 × 19 =
  14. 14.38 × 99 =
  15. 15.13 × 9 =
  16. 16.27 × 98 =
  17. 17.9 × 29 =
  18. 18.3 × 49 =
  19. 19.10 × 9 =
  20. 20.3 × 29 =
  21. 21.9 × 98 =
  22. 22.11 × 98 =
  23. 23.12 × 29 =
  24. 24.10 × 29 =
  25. 25.15 × 9 =
  26. 26.33 × 98 =
  27. 27.9 × 99 =
  28. 28.13 × 9 =
  29. 29.7 × 9 =
  30. 30.10 × 99 =
  31. 31.14 × 99 =
  32. 32.3 × 9 =
  33. 33.29 × 98 =
  34. 34.3 × 19 =
  35. 35.5 × 9 =
  36. 36.11 × 19 =
  37. 37.13 × 98 =
  38. 38.32 × 98 =
  39. 39.14 × 19 =
  40. 40.14 × 19 =

Answer key

  1. 1386
  2. 27
  3. 95
  4. 2277
  5. 133
  6. 126
  7. 588
  8. 245
  9. 90
  10. 99
  11. 392
  12. 54
  13. 228
  14. 3762
  15. 117
  16. 2646
  17. 261
  18. 147
  19. 90
  20. 87
  21. 882
  22. 1078
  23. 348
  24. 290
  25. 135
  26. 3234
  27. 891
  28. 117
  29. 63
  30. 990
  31. 1386
  32. 27
  33. 2842
  34. 57
  35. 45
  36. 209
  37. 1274
  38. 3136
  39. 266
  40. 266

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