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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 48 · 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 × 9 =
  2. 2.4 × 19 =
  3. 3.32 × 99 =
  4. 4.5 × 49 =
  5. 5.14 × 19 =
  6. 6.6 × 9 =
  7. 7.7 × 49 =
  8. 8.7 × 19 =
  9. 9.7 × 98 =
  10. 10.6 × 9 =
  11. 11.27 × 98 =
  12. 12.14 × 9 =
  13. 13.6 × 19 =
  14. 14.8 × 9 =
  15. 15.16 × 98 =
  16. 16.5 × 19 =
  17. 17.3 × 29 =
  18. 18.5 × 19 =
  19. 19.15 × 49 =
  20. 20.33 × 99 =
  21. 21.5 × 49 =
  22. 22.12 × 98 =
  23. 23.8 × 29 =
  24. 24.9 × 9 =
  25. 25.10 × 99 =
  26. 26.13 × 9 =
  27. 27.11 × 19 =
  28. 28.7 × 19 =
  29. 29.3 × 29 =
  30. 30.14 × 19 =
  31. 31.12 × 98 =
  32. 32.7 × 9 =
  33. 33.28 × 99 =
  34. 34.5 × 9 =
  35. 35.5 × 9 =
  36. 36.15 × 29 =
  37. 37.8 × 19 =
  38. 38.12 × 49 =
  39. 39.13 × 9 =
  40. 40.11 × 29 =

Answer key

  1. 63
  2. 76
  3. 3168
  4. 245
  5. 266
  6. 54
  7. 343
  8. 133
  9. 686
  10. 54
  11. 2646
  12. 126
  13. 114
  14. 72
  15. 1568
  16. 95
  17. 87
  18. 95
  19. 735
  20. 3267
  21. 245
  22. 1176
  23. 232
  24. 81
  25. 990
  26. 117
  27. 209
  28. 133
  29. 87
  30. 266
  31. 1176
  32. 63
  33. 2772
  34. 45
  35. 45
  36. 435
  37. 152
  38. 588
  39. 117
  40. 319

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