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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 41 · 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 × 19 =
  2. 2.14 × 29 =
  3. 3.13 × 49 =
  4. 4.9 × 49 =
  5. 5.4 × 49 =
  6. 6.11 × 19 =
  7. 7.5 × 49 =
  8. 8.4 × 49 =
  9. 9.4 × 9 =
  10. 10.14 × 9 =
  11. 11.6 × 99 =
  12. 12.14 × 29 =
  13. 13.6 × 19 =
  14. 14.9 × 19 =
  15. 15.5 × 19 =
  16. 16.13 × 29 =
  17. 17.15 × 19 =
  18. 18.7 × 49 =
  19. 19.9 × 19 =
  20. 20.6 × 98 =
  21. 21.26 × 98 =
  22. 22.14 × 29 =
  23. 23.10 × 19 =
  24. 24.15 × 9 =
  25. 25.12 × 9 =
  26. 26.8 × 9 =
  27. 27.12 × 19 =
  28. 28.12 × 98 =
  29. 29.8 × 19 =
  30. 30.7 × 49 =
  31. 31.10 × 99 =
  32. 32.29 × 99 =
  33. 33.10 × 98 =
  34. 34.12 × 29 =
  35. 35.6 × 9 =
  36. 36.9 × 19 =
  37. 37.15 × 9 =
  38. 38.9 × 29 =
  39. 39.16 × 98 =
  40. 40.7 × 29 =

Answer key

  1. 76
  2. 406
  3. 637
  4. 441
  5. 196
  6. 209
  7. 245
  8. 196
  9. 36
  10. 126
  11. 594
  12. 406
  13. 114
  14. 171
  15. 95
  16. 377
  17. 285
  18. 343
  19. 171
  20. 588
  21. 2548
  22. 406
  23. 190
  24. 135
  25. 108
  26. 72
  27. 228
  28. 1176
  29. 152
  30. 343
  31. 990
  32. 2871
  33. 980
  34. 348
  35. 54
  36. 171
  37. 135
  38. 261
  39. 1568
  40. 203

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