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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 146 · 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. 1.18 × 98 =
  2. 2.19 × 98 =
  3. 3.7 × 19 =
  4. 4.5 × 29 =
  5. 5.4 × 99 =
  6. 6.5 × 9 =
  7. 7.14 × 99 =
  8. 8.8 × 9 =
  9. 9.3 × 99 =
  10. 10.33 × 98 =
  11. 11.13 × 19 =
  12. 12.14 × 19 =
  13. 13.13 × 9 =
  14. 14.29 × 99 =
  15. 15.9 × 98 =
  16. 16.40 × 98 =
  17. 17.3 × 29 =
  18. 18.5 × 29 =
  19. 19.27 × 99 =
  20. 20.4 × 9 =
  21. 21.13 × 9 =
  22. 22.8 × 9 =
  23. 23.10 × 29 =
  24. 24.13 × 9 =
  25. 25.36 × 99 =
  26. 26.31 × 99 =
  27. 27.5 × 98 =
  28. 28.14 × 19 =
  29. 29.23 × 98 =
  30. 30.28 × 99 =
  31. 31.12 × 19 =
  32. 32.8 × 29 =
  33. 33.9 × 9 =
  34. 34.13 × 9 =
  35. 35.5 × 29 =
  36. 36.13 × 9 =
  37. 37.10 × 9 =
  38. 38.26 × 98 =
  39. 39.5 × 9 =
  40. 40.12 × 19 =

Answer key

  1. 1764
  2. 1862
  3. 133
  4. 145
  5. 396
  6. 45
  7. 1386
  8. 72
  9. 297
  10. 3234
  11. 247
  12. 266
  13. 117
  14. 2871
  15. 882
  16. 3920
  17. 87
  18. 145
  19. 2673
  20. 36
  21. 117
  22. 72
  23. 290
  24. 117
  25. 3564
  26. 3069
  27. 490
  28. 266
  29. 2254
  30. 2772
  31. 228
  32. 232
  33. 81
  34. 117
  35. 145
  36. 117
  37. 90
  38. 2548
  39. 45
  40. 228

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