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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 736 · 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. 1.13 × 29 =
  2. 2.10 × 99 =
  3. 3.3 × 49 =
  4. 4.5 × 49 =
  5. 5.26 × 98 =
  6. 6.6 × 9 =
  7. 7.3 × 98 =
  8. 8.13 × 9 =
  9. 9.14 × 29 =
  10. 10.14 × 9 =
  11. 11.11 × 9 =
  12. 12.7 × 98 =
  13. 13.13 × 29 =
  14. 14.18 × 98 =
  15. 15.6 × 9 =
  16. 16.4 × 29 =
  17. 17.7 × 49 =
  18. 18.15 × 19 =
  19. 19.13 × 98 =
  20. 20.5 × 19 =
  21. 21.15 × 49 =
  22. 22.3 × 98 =
  23. 23.6 × 19 =
  24. 24.7 × 49 =
  25. 25.7 × 98 =
  26. 26.5 × 9 =
  27. 27.8 × 19 =
  28. 28.12 × 19 =
  29. 29.5 × 19 =
  30. 30.4 × 19 =
  31. 31.32 × 98 =
  32. 32.7 × 9 =
  33. 33.7 × 9 =
  34. 34.10 × 49 =
  35. 35.6 × 9 =
  36. 36.5 × 19 =
  37. 37.39 × 99 =
  38. 38.4 × 9 =
  39. 39.22 × 99 =
  40. 40.33 × 99 =

Answer key

  1. 377
  2. 990
  3. 147
  4. 245
  5. 2548
  6. 54
  7. 294
  8. 117
  9. 406
  10. 126
  11. 99
  12. 686
  13. 377
  14. 1764
  15. 54
  16. 116
  17. 343
  18. 285
  19. 1274
  20. 95
  21. 735
  22. 294
  23. 114
  24. 343
  25. 686
  26. 45
  27. 152
  28. 228
  29. 95
  30. 76
  31. 3136
  32. 63
  33. 63
  34. 490
  35. 54
  36. 95
  37. 3861
  38. 36
  39. 2178
  40. 3267

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