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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 557 · 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. 1.11 × 98 =
  2. 2.14 × 19 =
  3. 3.13 × 29 =
  4. 4.24 × 98 =
  5. 5.12 × 9 =
  6. 6.9 × 29 =
  7. 7.34 × 99 =
  8. 8.7 × 19 =
  9. 9.3 × 19 =
  10. 10.6 × 9 =
  11. 11.9 × 9 =
  12. 12.11 × 99 =
  13. 13.8 × 19 =
  14. 14.34 × 98 =
  15. 15.5 × 9 =
  16. 16.4 × 9 =
  17. 17.39 × 98 =
  18. 18.12 × 49 =
  19. 19.3 × 19 =
  20. 20.6 × 29 =
  21. 21.15 × 49 =
  22. 22.11 × 9 =
  23. 23.10 × 29 =
  24. 24.9 × 29 =
  25. 25.24 × 98 =
  26. 26.12 × 49 =
  27. 27.10 × 9 =
  28. 28.4 × 9 =
  29. 29.5 × 29 =
  30. 30.11 × 19 =
  31. 31.15 × 19 =
  32. 32.5 × 29 =
  33. 33.13 × 98 =
  34. 34.3 × 99 =
  35. 35.5 × 29 =
  36. 36.9 × 98 =
  37. 37.4 × 19 =
  38. 38.12 × 29 =
  39. 39.5 × 19 =
  40. 40.27 × 99 =

Answer key

  1. 1078
  2. 266
  3. 377
  4. 2352
  5. 108
  6. 261
  7. 3366
  8. 133
  9. 57
  10. 54
  11. 81
  12. 1089
  13. 152
  14. 3332
  15. 45
  16. 36
  17. 3822
  18. 588
  19. 57
  20. 174
  21. 735
  22. 99
  23. 290
  24. 261
  25. 2352
  26. 588
  27. 90
  28. 36
  29. 145
  30. 209
  31. 285
  32. 145
  33. 1274
  34. 297
  35. 145
  36. 882
  37. 76
  38. 348
  39. 95
  40. 2673

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