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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 755 · 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 × 98 =
  2. 2.8 × 9 =
  3. 3.6 × 9 =
  4. 4.25 × 99 =
  5. 5.13 × 29 =
  6. 6.14 × 29 =
  7. 7.11 × 19 =
  8. 8.8 × 29 =
  9. 9.38 × 98 =
  10. 10.10 × 98 =
  11. 11.12 × 9 =
  12. 12.7 × 49 =
  13. 13.7 × 19 =
  14. 14.40 × 99 =
  15. 15.8 × 99 =
  16. 16.15 × 29 =
  17. 17.34 × 98 =
  18. 18.9 × 98 =
  19. 19.7 × 19 =
  20. 20.3 × 9 =
  21. 21.32 × 98 =
  22. 22.12 × 29 =
  23. 23.10 × 9 =
  24. 24.11 × 19 =
  25. 25.3 × 9 =
  26. 26.28 × 98 =
  27. 27.6 × 29 =
  28. 28.5 × 19 =
  29. 29.36 × 99 =
  30. 30.14 × 19 =
  31. 31.12 × 49 =
  32. 32.4 × 19 =
  33. 33.14 × 19 =
  34. 34.11 × 29 =
  35. 35.20 × 98 =
  36. 36.13 × 29 =
  37. 37.5 × 9 =
  38. 38.8 × 9 =
  39. 39.6 × 98 =
  40. 40.3 × 29 =

Answer key

  1. 588
  2. 72
  3. 54
  4. 2475
  5. 377
  6. 406
  7. 209
  8. 232
  9. 3724
  10. 980
  11. 108
  12. 343
  13. 133
  14. 3960
  15. 792
  16. 435
  17. 3332
  18. 882
  19. 133
  20. 27
  21. 3136
  22. 348
  23. 90
  24. 209
  25. 27
  26. 2744
  27. 174
  28. 95
  29. 3564
  30. 266
  31. 588
  32. 76
  33. 266
  34. 319
  35. 1960
  36. 377
  37. 45
  38. 72
  39. 588
  40. 87

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