← Round and adjust lesson New set →

Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 401 · 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. 1.7 × 49 =
  2. 2.9 × 29 =
  3. 3.9 × 9 =
  4. 4.9 × 9 =
  5. 5.4 × 9 =
  6. 6.14 × 49 =
  7. 7.14 × 98 =
  8. 8.23 × 98 =
  9. 9.20 × 99 =
  10. 10.5 × 9 =
  11. 11.9 × 19 =
  12. 12.12 × 9 =
  13. 13.14 × 19 =
  14. 14.9 × 49 =
  15. 15.12 × 9 =
  16. 16.14 × 9 =
  17. 17.26 × 99 =
  18. 18.7 × 19 =
  19. 19.15 × 49 =
  20. 20.18 × 98 =
  21. 21.14 × 29 =
  22. 22.8 × 9 =
  23. 23.11 × 9 =
  24. 24.15 × 9 =
  25. 25.29 × 98 =
  26. 26.4 × 19 =
  27. 27.10 × 19 =
  28. 28.5 × 9 =
  29. 29.11 × 19 =
  30. 30.25 × 98 =
  31. 31.3 × 9 =
  32. 32.8 × 49 =
  33. 33.4 × 19 =
  34. 34.29 × 99 =
  35. 35.18 × 98 =
  36. 36.5 × 19 =
  37. 37.6 × 19 =
  38. 38.14 × 9 =
  39. 39.14 × 49 =
  40. 40.14 × 98 =

Answer key

  1. 343
  2. 261
  3. 81
  4. 81
  5. 36
  6. 686
  7. 1372
  8. 2254
  9. 1980
  10. 45
  11. 171
  12. 108
  13. 266
  14. 441
  15. 108
  16. 126
  17. 2574
  18. 133
  19. 735
  20. 1764
  21. 406
  22. 72
  23. 99
  24. 135
  25. 2842
  26. 76
  27. 190
  28. 45
  29. 209
  30. 2450
  31. 27
  32. 392
  33. 76
  34. 2871
  35. 1764
  36. 95
  37. 114
  38. 126
  39. 686
  40. 1372

Free tables & multiplication lessons, practice and worksheets at talentjr.in/multiplication-tables