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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 743 · 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. 1.6 × 29 =
  2. 2.10 × 49 =
  3. 3.14 × 98 =
  4. 4.3 × 29 =
  5. 5.13 × 9 =
  6. 6.17 × 98 =
  7. 7.26 × 98 =
  8. 8.8 × 49 =
  9. 9.11 × 9 =
  10. 10.7 × 49 =
  11. 11.4 × 9 =
  12. 12.5 × 49 =
  13. 13.6 × 49 =
  14. 14.3 × 19 =
  15. 15.10 × 9 =
  16. 16.27 × 99 =
  17. 17.14 × 9 =
  18. 18.13 × 49 =
  19. 19.29 × 98 =
  20. 20.10 × 19 =
  21. 21.4 × 19 =
  22. 22.13 × 29 =
  23. 23.11 × 98 =
  24. 24.13 × 49 =
  25. 25.9 × 19 =
  26. 26.3 × 49 =
  27. 27.3 × 19 =
  28. 28.14 × 19 =
  29. 29.29 × 98 =
  30. 30.11 × 9 =
  31. 31.14 × 19 =
  32. 32.6 × 29 =
  33. 33.14 × 29 =
  34. 34.6 × 29 =
  35. 35.9 × 29 =
  36. 36.15 × 99 =
  37. 37.13 × 9 =
  38. 38.6 × 99 =
  39. 39.14 × 49 =
  40. 40.14 × 49 =

Answer key

  1. 174
  2. 490
  3. 1372
  4. 87
  5. 117
  6. 1666
  7. 2548
  8. 392
  9. 99
  10. 343
  11. 36
  12. 245
  13. 294
  14. 57
  15. 90
  16. 2673
  17. 126
  18. 637
  19. 2842
  20. 190
  21. 76
  22. 377
  23. 1078
  24. 637
  25. 171
  26. 147
  27. 57
  28. 266
  29. 2842
  30. 99
  31. 266
  32. 174
  33. 406
  34. 174
  35. 261
  36. 1485
  37. 117
  38. 594
  39. 686
  40. 686

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