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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 398 · 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. 1.9 × 29 =
  2. 2.5 × 9 =
  3. 3.10 × 29 =
  4. 4.11 × 29 =
  5. 5.15 × 29 =
  6. 6.5 × 29 =
  7. 7.12 × 49 =
  8. 8.8 × 49 =
  9. 9.6 × 19 =
  10. 10.23 × 98 =
  11. 11.11 × 9 =
  12. 12.23 × 98 =
  13. 13.24 × 99 =
  14. 14.8 × 99 =
  15. 15.5 × 9 =
  16. 16.5 × 9 =
  17. 17.13 × 98 =
  18. 18.10 × 19 =
  19. 19.30 × 99 =
  20. 20.7 × 98 =
  21. 21.38 × 98 =
  22. 22.7 × 29 =
  23. 23.37 × 98 =
  24. 24.14 × 29 =
  25. 25.4 × 49 =
  26. 26.23 × 99 =
  27. 27.15 × 98 =
  28. 28.14 × 9 =
  29. 29.14 × 19 =
  30. 30.5 × 19 =
  31. 31.28 × 98 =
  32. 32.15 × 19 =
  33. 33.14 × 9 =
  34. 34.15 × 19 =
  35. 35.4 × 19 =
  36. 36.10 × 9 =
  37. 37.39 × 98 =
  38. 38.5 × 19 =
  39. 39.7 × 49 =
  40. 40.11 × 99 =

Answer key

  1. 261
  2. 45
  3. 290
  4. 319
  5. 435
  6. 145
  7. 588
  8. 392
  9. 114
  10. 2254
  11. 99
  12. 2254
  13. 2376
  14. 792
  15. 45
  16. 45
  17. 1274
  18. 190
  19. 2970
  20. 686
  21. 3724
  22. 203
  23. 3626
  24. 406
  25. 196
  26. 2277
  27. 1470
  28. 126
  29. 266
  30. 95
  31. 2744
  32. 285
  33. 126
  34. 285
  35. 76
  36. 90
  37. 3822
  38. 95
  39. 343
  40. 1089

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