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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 88 · 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 × 29 =
  2. 2.10 × 99 =
  3. 3.13 × 98 =
  4. 4.9 × 29 =
  5. 5.12 × 49 =
  6. 6.4 × 19 =
  7. 7.9 × 29 =
  8. 8.9 × 29 =
  9. 9.32 × 99 =
  10. 10.13 × 19 =
  11. 11.11 × 29 =
  12. 12.10 × 29 =
  13. 13.13 × 49 =
  14. 14.36 × 99 =
  15. 15.14 × 19 =
  16. 16.8 × 9 =
  17. 17.4 × 9 =
  18. 18.10 × 19 =
  19. 19.11 × 49 =
  20. 20.9 × 9 =
  21. 21.4 × 29 =
  22. 22.11 × 19 =
  23. 23.15 × 29 =
  24. 24.9 × 19 =
  25. 25.10 × 29 =
  26. 26.14 × 19 =
  27. 27.20 × 99 =
  28. 28.38 × 99 =
  29. 29.13 × 19 =
  30. 30.4 × 29 =
  31. 31.8 × 19 =
  32. 32.14 × 19 =
  33. 33.19 × 98 =
  34. 34.3 × 98 =
  35. 35.7 × 49 =
  36. 36.18 × 98 =
  37. 37.12 × 49 =
  38. 38.5 × 29 =
  39. 39.15 × 9 =
  40. 40.13 × 19 =

Answer key

  1. 319
  2. 990
  3. 1274
  4. 261
  5. 588
  6. 76
  7. 261
  8. 261
  9. 3168
  10. 247
  11. 319
  12. 290
  13. 637
  14. 3564
  15. 266
  16. 72
  17. 36
  18. 190
  19. 539
  20. 81
  21. 116
  22. 209
  23. 435
  24. 171
  25. 290
  26. 266
  27. 1980
  28. 3762
  29. 247
  30. 116
  31. 152
  32. 266
  33. 1862
  34. 294
  35. 343
  36. 1764
  37. 588
  38. 145
  39. 135
  40. 247

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