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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 540 · 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. 1.9 × 49 =
  2. 2.27 × 99 =
  3. 3.9 × 98 =
  4. 4.6 × 49 =
  5. 5.4 × 29 =
  6. 6.6 × 49 =
  7. 7.35 × 99 =
  8. 8.5 × 49 =
  9. 9.11 × 19 =
  10. 10.10 × 9 =
  11. 11.15 × 49 =
  12. 12.3 × 29 =
  13. 13.11 × 99 =
  14. 14.20 × 98 =
  15. 15.4 × 19 =
  16. 16.7 × 29 =
  17. 17.3 × 98 =
  18. 18.15 × 98 =
  19. 19.9 × 98 =
  20. 20.10 × 19 =
  21. 21.12 × 98 =
  22. 22.13 × 98 =
  23. 23.3 × 9 =
  24. 24.9 × 99 =
  25. 25.24 × 98 =
  26. 26.9 × 9 =
  27. 27.6 × 29 =
  28. 28.5 × 9 =
  29. 29.4 × 19 =
  30. 30.10 × 9 =
  31. 31.10 × 29 =
  32. 32.7 × 19 =
  33. 33.12 × 49 =
  34. 34.36 × 98 =
  35. 35.10 × 9 =
  36. 36.26 × 98 =
  37. 37.8 × 19 =
  38. 38.5 × 29 =
  39. 39.28 × 99 =
  40. 40.8 × 49 =

Answer key

  1. 441
  2. 2673
  3. 882
  4. 294
  5. 116
  6. 294
  7. 3465
  8. 245
  9. 209
  10. 90
  11. 735
  12. 87
  13. 1089
  14. 1960
  15. 76
  16. 203
  17. 294
  18. 1470
  19. 882
  20. 190
  21. 1176
  22. 1274
  23. 27
  24. 891
  25. 2352
  26. 81
  27. 174
  28. 45
  29. 76
  30. 90
  31. 290
  32. 133
  33. 588
  34. 3528
  35. 90
  36. 2548
  37. 152
  38. 145
  39. 2772
  40. 392

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