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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 361 · 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. 2.11 × 19 =
  3. 3.3 × 49 =
  4. 4.6 × 99 =
  5. 5.10 × 49 =
  6. 6.5 × 9 =
  7. 7.13 × 99 =
  8. 8.10 × 29 =
  9. 9.4 × 49 =
  10. 10.8 × 99 =
  11. 11.11 × 29 =
  12. 12.9 × 49 =
  13. 13.5 × 19 =
  14. 14.4 × 19 =
  15. 15.4 × 99 =
  16. 16.15 × 9 =
  17. 17.19 × 98 =
  18. 18.13 × 29 =
  19. 19.11 × 29 =
  20. 20.11 × 9 =
  21. 21.13 × 9 =
  22. 22.11 × 99 =
  23. 23.30 × 99 =
  24. 24.20 × 99 =
  25. 25.3 × 19 =
  26. 26.26 × 99 =
  27. 27.13 × 98 =
  28. 28.13 × 99 =
  29. 29.4 × 49 =
  30. 30.7 × 9 =
  31. 31.28 × 98 =
  32. 32.29 × 98 =
  33. 33.15 × 99 =
  34. 34.4 × 19 =
  35. 35.26 × 99 =
  36. 36.4 × 49 =
  37. 37.31 × 98 =
  38. 38.4 × 19 =
  39. 39.8 × 9 =
  40. 40.11 × 49 =

Answer key

  1. 588
  2. 209
  3. 147
  4. 594
  5. 490
  6. 45
  7. 1287
  8. 290
  9. 196
  10. 792
  11. 319
  12. 441
  13. 95
  14. 76
  15. 396
  16. 135
  17. 1862
  18. 377
  19. 319
  20. 99
  21. 117
  22. 1089
  23. 2970
  24. 1980
  25. 57
  26. 2574
  27. 1274
  28. 1287
  29. 196
  30. 63
  31. 2744
  32. 2842
  33. 1485
  34. 76
  35. 2574
  36. 196
  37. 3038
  38. 76
  39. 72
  40. 539

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