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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 498 · 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. 1.12 × 98 =
  2. 2.7 × 49 =
  3. 3.4 × 19 =
  4. 4.9 × 29 =
  5. 5.9 × 9 =
  6. 6.5 × 19 =
  7. 7.22 × 98 =
  8. 8.7 × 19 =
  9. 9.10 × 98 =
  10. 10.4 × 9 =
  11. 11.12 × 19 =
  12. 12.4 × 99 =
  13. 13.12 × 49 =
  14. 14.7 × 29 =
  15. 15.10 × 49 =
  16. 16.14 × 49 =
  17. 17.12 × 49 =
  18. 18.6 × 98 =
  19. 19.36 × 99 =
  20. 20.21 × 99 =
  21. 21.6 × 98 =
  22. 22.6 × 9 =
  23. 23.6 × 49 =
  24. 24.19 × 98 =
  25. 25.35 × 98 =
  26. 26.35 × 98 =
  27. 27.10 × 29 =
  28. 28.6 × 9 =
  29. 29.9 × 29 =
  30. 30.4 × 9 =
  31. 31.4 × 9 =
  32. 32.14 × 9 =
  33. 33.9 × 98 =
  34. 34.3 × 29 =
  35. 35.5 × 29 =
  36. 36.17 × 99 =
  37. 37.14 × 9 =
  38. 38.9 × 29 =
  39. 39.6 × 19 =
  40. 40.8 × 9 =

Answer key

  1. 1176
  2. 343
  3. 76
  4. 261
  5. 81
  6. 95
  7. 2156
  8. 133
  9. 980
  10. 36
  11. 228
  12. 396
  13. 588
  14. 203
  15. 490
  16. 686
  17. 588
  18. 588
  19. 3564
  20. 2079
  21. 588
  22. 54
  23. 294
  24. 1862
  25. 3430
  26. 3430
  27. 290
  28. 54
  29. 261
  30. 36
  31. 36
  32. 126
  33. 882
  34. 87
  35. 145
  36. 1683
  37. 126
  38. 261
  39. 114
  40. 72

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