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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 209 · 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. 1.5 × 29 =
  2. 2.26 × 98 =
  3. 3.4 × 29 =
  4. 4.7 × 9 =
  5. 5.18 × 99 =
  6. 6.14 × 29 =
  7. 7.38 × 99 =
  8. 8.11 × 29 =
  9. 9.30 × 98 =
  10. 10.11 × 98 =
  11. 11.33 × 99 =
  12. 12.5 × 29 =
  13. 13.13 × 98 =
  14. 14.28 × 98 =
  15. 15.11 × 29 =
  16. 16.19 × 99 =
  17. 17.4 × 29 =
  18. 18.14 × 9 =
  19. 19.3 × 49 =
  20. 20.4 × 49 =
  21. 21.6 × 49 =
  22. 22.6 × 49 =
  23. 23.13 × 99 =
  24. 24.35 × 98 =
  25. 25.7 × 19 =
  26. 26.9 × 29 =
  27. 27.15 × 49 =
  28. 28.3 × 9 =
  29. 29.10 × 98 =
  30. 30.9 × 49 =
  31. 31.7 × 98 =
  32. 32.3 × 19 =
  33. 33.14 × 19 =
  34. 34.13 × 29 =
  35. 35.13 × 9 =
  36. 36.12 × 99 =
  37. 37.9 × 49 =
  38. 38.17 × 99 =
  39. 39.4 × 29 =
  40. 40.7 × 98 =

Answer key

  1. 145
  2. 2548
  3. 116
  4. 63
  5. 1782
  6. 406
  7. 3762
  8. 319
  9. 2940
  10. 1078
  11. 3267
  12. 145
  13. 1274
  14. 2744
  15. 319
  16. 1881
  17. 116
  18. 126
  19. 147
  20. 196
  21. 294
  22. 294
  23. 1287
  24. 3430
  25. 133
  26. 261
  27. 735
  28. 27
  29. 980
  30. 441
  31. 686
  32. 57
  33. 266
  34. 377
  35. 117
  36. 1188
  37. 441
  38. 1683
  39. 116
  40. 686

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