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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 328 · 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. 1.13 × 9 =
  2. 2.13 × 29 =
  3. 3.12 × 49 =
  4. 4.3 × 9 =
  5. 5.28 × 98 =
  6. 6.6 × 19 =
  7. 7.3 × 29 =
  8. 8.4 × 29 =
  9. 9.4 × 9 =
  10. 10.6 × 19 =
  11. 11.3 × 49 =
  12. 12.10 × 9 =
  13. 13.29 × 99 =
  14. 14.4 × 29 =
  15. 15.12 × 98 =
  16. 16.12 × 29 =
  17. 17.7 × 49 =
  18. 18.10 × 98 =
  19. 19.14 × 9 =
  20. 20.8 × 19 =
  21. 21.10 × 49 =
  22. 22.3 × 9 =
  23. 23.3 × 19 =
  24. 24.21 × 99 =
  25. 25.3 × 19 =
  26. 26.7 × 29 =
  27. 27.15 × 9 =
  28. 28.12 × 49 =
  29. 29.10 × 19 =
  30. 30.15 × 19 =
  31. 31.7 × 49 =
  32. 32.3 × 49 =
  33. 33.6 × 9 =
  34. 34.4 × 49 =
  35. 35.5 × 29 =
  36. 36.15 × 19 =
  37. 37.13 × 99 =
  38. 38.15 × 98 =
  39. 39.7 × 9 =
  40. 40.14 × 49 =

Answer key

  1. 117
  2. 377
  3. 588
  4. 27
  5. 2744
  6. 114
  7. 87
  8. 116
  9. 36
  10. 114
  11. 147
  12. 90
  13. 2871
  14. 116
  15. 1176
  16. 348
  17. 343
  18. 980
  19. 126
  20. 152
  21. 490
  22. 27
  23. 57
  24. 2079
  25. 57
  26. 203
  27. 135
  28. 588
  29. 190
  30. 285
  31. 343
  32. 147
  33. 54
  34. 196
  35. 145
  36. 285
  37. 1287
  38. 1470
  39. 63
  40. 686

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