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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 570 · 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. 1.5 × 49 =
  2. 2.4 × 19 =
  3. 3.19 × 98 =
  4. 4.13 × 29 =
  5. 5.32 × 98 =
  6. 6.6 × 49 =
  7. 7.12 × 29 =
  8. 8.6 × 9 =
  9. 9.21 × 99 =
  10. 10.14 × 98 =
  11. 11.3 × 99 =
  12. 12.14 × 19 =
  13. 13.5 × 19 =
  14. 14.3 × 98 =
  15. 15.14 × 29 =
  16. 16.6 × 29 =
  17. 17.27 × 98 =
  18. 18.8 × 19 =
  19. 19.3 × 49 =
  20. 20.14 × 9 =
  21. 21.7 × 9 =
  22. 22.28 × 98 =
  23. 23.11 × 9 =
  24. 24.8 × 9 =
  25. 25.7 × 19 =
  26. 26.12 × 19 =
  27. 27.29 × 99 =
  28. 28.5 × 9 =
  29. 29.10 × 19 =
  30. 30.8 × 49 =
  31. 31.3 × 98 =
  32. 32.4 × 9 =
  33. 33.6 × 9 =
  34. 34.3 × 19 =
  35. 35.7 × 19 =
  36. 36.3 × 19 =
  37. 37.6 × 19 =
  38. 38.4 × 19 =
  39. 39.11 × 9 =
  40. 40.14 × 19 =

Answer key

  1. 245
  2. 76
  3. 1862
  4. 377
  5. 3136
  6. 294
  7. 348
  8. 54
  9. 2079
  10. 1372
  11. 297
  12. 266
  13. 95
  14. 294
  15. 406
  16. 174
  17. 2646
  18. 152
  19. 147
  20. 126
  21. 63
  22. 2744
  23. 99
  24. 72
  25. 133
  26. 228
  27. 2871
  28. 45
  29. 190
  30. 392
  31. 294
  32. 36
  33. 54
  34. 57
  35. 133
  36. 57
  37. 114
  38. 76
  39. 99
  40. 266

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