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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 20 · 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. 1.7 × 19 =
  2. 2.6 × 19 =
  3. 3.10 × 9 =
  4. 4.15 × 49 =
  5. 5.13 × 98 =
  6. 6.12 × 9 =
  7. 7.8 × 9 =
  8. 8.8 × 19 =
  9. 9.5 × 9 =
  10. 10.19 × 98 =
  11. 11.6 × 49 =
  12. 12.14 × 49 =
  13. 13.3 × 49 =
  14. 14.27 × 98 =
  15. 15.9 × 19 =
  16. 16.13 × 19 =
  17. 17.4 × 49 =
  18. 18.38 × 99 =
  19. 19.15 × 49 =
  20. 20.3 × 29 =
  21. 21.11 × 19 =
  22. 22.12 × 99 =
  23. 23.4 × 49 =
  24. 24.10 × 29 =
  25. 25.38 × 98 =
  26. 26.40 × 99 =
  27. 27.8 × 49 =
  28. 28.3 × 49 =
  29. 29.12 × 19 =
  30. 30.5 × 9 =
  31. 31.8 × 19 =
  32. 32.13 × 19 =
  33. 33.15 × 19 =
  34. 34.29 × 98 =
  35. 35.10 × 19 =
  36. 36.17 × 99 =
  37. 37.9 × 99 =
  38. 38.37 × 98 =
  39. 39.8 × 49 =
  40. 40.27 × 98 =

Answer key

  1. 133
  2. 114
  3. 90
  4. 735
  5. 1274
  6. 108
  7. 72
  8. 152
  9. 45
  10. 1862
  11. 294
  12. 686
  13. 147
  14. 2646
  15. 171
  16. 247
  17. 196
  18. 3762
  19. 735
  20. 87
  21. 209
  22. 1188
  23. 196
  24. 290
  25. 3724
  26. 3960
  27. 392
  28. 147
  29. 228
  30. 45
  31. 152
  32. 247
  33. 285
  34. 2842
  35. 190
  36. 1683
  37. 891
  38. 3626
  39. 392
  40. 2646

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