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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 529 · 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. 1.8 × 19 =
  2. 2.9 × 9 =
  3. 3.6 × 19 =
  4. 4.15 × 29 =
  5. 5.13 × 98 =
  6. 6.15 × 49 =
  7. 7.11 × 19 =
  8. 8.6 × 9 =
  9. 9.26 × 99 =
  10. 10.10 × 49 =
  11. 11.8 × 9 =
  12. 12.7 × 9 =
  13. 13.17 × 98 =
  14. 14.14 × 49 =
  15. 15.6 × 29 =
  16. 16.5 × 19 =
  17. 17.11 × 9 =
  18. 18.5 × 9 =
  19. 19.8 × 29 =
  20. 20.9 × 9 =
  21. 21.8 × 49 =
  22. 22.8 × 29 =
  23. 23.5 × 49 =
  24. 24.16 × 98 =
  25. 25.9 × 29 =
  26. 26.5 × 49 =
  27. 27.6 × 49 =
  28. 28.24 × 99 =
  29. 29.21 × 98 =
  30. 30.12 × 9 =
  31. 31.3 × 98 =
  32. 32.8 × 9 =
  33. 33.18 × 98 =
  34. 34.4 × 29 =
  35. 35.23 × 99 =
  36. 36.39 × 98 =
  37. 37.37 × 98 =
  38. 38.8 × 99 =
  39. 39.15 × 29 =
  40. 40.8 × 99 =

Answer key

  1. 152
  2. 81
  3. 114
  4. 435
  5. 1274
  6. 735
  7. 209
  8. 54
  9. 2574
  10. 490
  11. 72
  12. 63
  13. 1666
  14. 686
  15. 174
  16. 95
  17. 99
  18. 45
  19. 232
  20. 81
  21. 392
  22. 232
  23. 245
  24. 1568
  25. 261
  26. 245
  27. 294
  28. 2376
  29. 2058
  30. 108
  31. 294
  32. 72
  33. 1764
  34. 116
  35. 2277
  36. 3822
  37. 3626
  38. 792
  39. 435
  40. 792

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