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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 789 · 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. 2.11 × 29 =
  3. 3.14 × 9 =
  4. 4.5 × 98 =
  5. 5.12 × 98 =
  6. 6.3 × 49 =
  7. 7.5 × 29 =
  8. 8.9 × 99 =
  9. 9.17 × 98 =
  10. 10.11 × 29 =
  11. 11.3 × 49 =
  12. 12.3 × 9 =
  13. 13.14 × 9 =
  14. 14.20 × 99 =
  15. 15.39 × 98 =
  16. 16.3 × 19 =
  17. 17.3 × 9 =
  18. 18.6 × 29 =
  19. 19.10 × 29 =
  20. 20.6 × 49 =
  21. 21.4 × 49 =
  22. 22.12 × 99 =
  23. 23.9 × 9 =
  24. 24.15 × 19 =
  25. 25.10 × 49 =
  26. 26.7 × 29 =
  27. 27.23 × 98 =
  28. 28.3 × 19 =
  29. 29.21 × 98 =
  30. 30.12 × 49 =
  31. 31.7 × 19 =
  32. 32.13 × 9 =
  33. 33.12 × 29 =
  34. 34.22 × 98 =
  35. 35.7 × 49 =
  36. 36.28 × 99 =
  37. 37.10 × 29 =
  38. 38.11 × 29 =
  39. 39.34 × 99 =
  40. 40.12 × 9 =

Answer key

  1. 209
  2. 319
  3. 126
  4. 490
  5. 1176
  6. 147
  7. 145
  8. 891
  9. 1666
  10. 319
  11. 147
  12. 27
  13. 126
  14. 1980
  15. 3822
  16. 57
  17. 27
  18. 174
  19. 290
  20. 294
  21. 196
  22. 1188
  23. 81
  24. 285
  25. 490
  26. 203
  27. 2254
  28. 57
  29. 2058
  30. 588
  31. 133
  32. 117
  33. 348
  34. 2156
  35. 343
  36. 2772
  37. 290
  38. 319
  39. 3366
  40. 108

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