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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 448 · 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. 1.36 × 98 =
  2. 2.3 × 19 =
  3. 3.29 × 99 =
  4. 4.10 × 29 =
  5. 5.4 × 99 =
  6. 6.5 × 98 =
  7. 7.3 × 19 =
  8. 8.13 × 19 =
  9. 9.10 × 99 =
  10. 10.22 × 99 =
  11. 11.13 × 49 =
  12. 12.11 × 19 =
  13. 13.6 × 29 =
  14. 14.3 × 19 =
  15. 15.9 × 99 =
  16. 16.39 × 98 =
  17. 17.13 × 29 =
  18. 18.12 × 9 =
  19. 19.9 × 19 =
  20. 20.9 × 9 =
  21. 21.36 × 99 =
  22. 22.4 × 29 =
  23. 23.9 × 29 =
  24. 24.10 × 19 =
  25. 25.14 × 49 =
  26. 26.3 × 29 =
  27. 27.10 × 99 =
  28. 28.11 × 99 =
  29. 29.34 × 99 =
  30. 30.8 × 9 =
  31. 31.11 × 9 =
  32. 32.4 × 49 =
  33. 33.7 × 19 =
  34. 34.4 × 9 =
  35. 35.11 × 29 =
  36. 36.8 × 99 =
  37. 37.6 × 19 =
  38. 38.5 × 29 =
  39. 39.9 × 9 =
  40. 40.6 × 19 =

Answer key

  1. 3528
  2. 57
  3. 2871
  4. 290
  5. 396
  6. 490
  7. 57
  8. 247
  9. 990
  10. 2178
  11. 637
  12. 209
  13. 174
  14. 57
  15. 891
  16. 3822
  17. 377
  18. 108
  19. 171
  20. 81
  21. 3564
  22. 116
  23. 261
  24. 190
  25. 686
  26. 87
  27. 990
  28. 1089
  29. 3366
  30. 72
  31. 99
  32. 196
  33. 133
  34. 36
  35. 319
  36. 792
  37. 114
  38. 145
  39. 81
  40. 114

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