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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 658 · 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 × 19 =
  2. 2.11 × 98 =
  3. 3.10 × 29 =
  4. 4.9 × 19 =
  5. 5.25 × 99 =
  6. 6.7 × 29 =
  7. 7.4 × 9 =
  8. 8.12 × 49 =
  9. 9.37 × 99 =
  10. 10.13 × 9 =
  11. 11.18 × 99 =
  12. 12.14 × 29 =
  13. 13.26 × 99 =
  14. 14.10 × 19 =
  15. 15.9 × 49 =
  16. 16.14 × 49 =
  17. 17.8 × 19 =
  18. 18.10 × 9 =
  19. 19.5 × 19 =
  20. 20.18 × 99 =
  21. 21.5 × 99 =
  22. 22.14 × 29 =
  23. 23.11 × 49 =
  24. 24.11 × 49 =
  25. 25.6 × 19 =
  26. 26.14 × 49 =
  27. 27.3 × 49 =
  28. 28.7 × 9 =
  29. 29.4 × 29 =
  30. 30.15 × 98 =
  31. 31.3 × 99 =
  32. 32.5 × 9 =
  33. 33.10 × 19 =
  34. 34.11 × 29 =
  35. 35.37 × 98 =
  36. 36.6 × 19 =
  37. 37.15 × 19 =
  38. 38.7 × 98 =
  39. 39.8 × 98 =
  40. 40.7 × 49 =

Answer key

  1. 95
  2. 1078
  3. 290
  4. 171
  5. 2475
  6. 203
  7. 36
  8. 588
  9. 3663
  10. 117
  11. 1782
  12. 406
  13. 2574
  14. 190
  15. 441
  16. 686
  17. 152
  18. 90
  19. 95
  20. 1782
  21. 495
  22. 406
  23. 539
  24. 539
  25. 114
  26. 686
  27. 147
  28. 63
  29. 116
  30. 1470
  31. 297
  32. 45
  33. 190
  34. 319
  35. 3626
  36. 114
  37. 285
  38. 686
  39. 784
  40. 343

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