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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 725 · 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. 2.12 × 9 =
  3. 3.7 × 9 =
  4. 4.11 × 9 =
  5. 5.5 × 98 =
  6. 6.8 × 29 =
  7. 7.6 × 29 =
  8. 8.3 × 49 =
  9. 9.6 × 9 =
  10. 10.13 × 49 =
  11. 11.5 × 19 =
  12. 12.8 × 9 =
  13. 13.14 × 29 =
  14. 14.7 × 99 =
  15. 15.15 × 98 =
  16. 16.4 × 9 =
  17. 17.9 × 98 =
  18. 18.6 × 29 =
  19. 19.3 × 19 =
  20. 20.14 × 9 =
  21. 21.14 × 49 =
  22. 22.31 × 98 =
  23. 23.9 × 9 =
  24. 24.6 × 9 =
  25. 25.18 × 98 =
  26. 26.33 × 98 =
  27. 27.9 × 19 =
  28. 28.5 × 9 =
  29. 29.4 × 98 =
  30. 30.19 × 99 =
  31. 31.12 × 9 =
  32. 32.9 × 98 =
  33. 33.7 × 19 =
  34. 34.9 × 9 =
  35. 35.9 × 29 =
  36. 36.9 × 29 =
  37. 37.3 × 9 =
  38. 38.11 × 9 =
  39. 39.9 × 49 =
  40. 40.14 × 49 =

Answer key

  1. 377
  2. 108
  3. 63
  4. 99
  5. 490
  6. 232
  7. 174
  8. 147
  9. 54
  10. 637
  11. 95
  12. 72
  13. 406
  14. 693
  15. 1470
  16. 36
  17. 882
  18. 174
  19. 57
  20. 126
  21. 686
  22. 3038
  23. 81
  24. 54
  25. 1764
  26. 3234
  27. 171
  28. 45
  29. 392
  30. 1881
  31. 108
  32. 882
  33. 133
  34. 81
  35. 261
  36. 261
  37. 27
  38. 99
  39. 441
  40. 686

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