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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 770 · 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. 1.23 × 98 =
  2. 2.11 × 29 =
  3. 3.15 × 49 =
  4. 4.9 × 99 =
  5. 5.8 × 19 =
  6. 6.10 × 49 =
  7. 7.4 × 9 =
  8. 8.37 × 98 =
  9. 9.9 × 19 =
  10. 10.22 × 98 =
  11. 11.4 × 9 =
  12. 12.13 × 29 =
  13. 13.6 × 29 =
  14. 14.19 × 98 =
  15. 15.11 × 49 =
  16. 16.7 × 19 =
  17. 17.9 × 19 =
  18. 18.38 × 98 =
  19. 19.11 × 19 =
  20. 20.5 × 19 =
  21. 21.13 × 19 =
  22. 22.4 × 49 =
  23. 23.6 × 19 =
  24. 24.4 × 9 =
  25. 25.15 × 19 =
  26. 26.13 × 49 =
  27. 27.10 × 19 =
  28. 28.4 × 49 =
  29. 29.7 × 9 =
  30. 30.14 × 49 =
  31. 31.16 × 98 =
  32. 32.8 × 49 =
  33. 33.20 × 98 =
  34. 34.27 × 98 =
  35. 35.10 × 9 =
  36. 36.5 × 9 =
  37. 37.10 × 99 =
  38. 38.11 × 9 =
  39. 39.39 × 99 =
  40. 40.8 × 49 =

Answer key

  1. 2254
  2. 319
  3. 735
  4. 891
  5. 152
  6. 490
  7. 36
  8. 3626
  9. 171
  10. 2156
  11. 36
  12. 377
  13. 174
  14. 1862
  15. 539
  16. 133
  17. 171
  18. 3724
  19. 209
  20. 95
  21. 247
  22. 196
  23. 114
  24. 36
  25. 285
  26. 637
  27. 190
  28. 196
  29. 63
  30. 686
  31. 1568
  32. 392
  33. 1960
  34. 2646
  35. 90
  36. 45
  37. 990
  38. 99
  39. 3861
  40. 392

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