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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 332 · 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. 1.3 × 9 =
  2. 2.5 × 9 =
  3. 3.5 × 49 =
  4. 4.11 × 19 =
  5. 5.12 × 29 =
  6. 6.13 × 19 =
  7. 7.7 × 29 =
  8. 8.3 × 19 =
  9. 9.11 × 49 =
  10. 10.9 × 9 =
  11. 11.15 × 99 =
  12. 12.13 × 49 =
  13. 13.9 × 19 =
  14. 14.8 × 9 =
  15. 15.4 × 19 =
  16. 16.12 × 98 =
  17. 17.11 × 19 =
  18. 18.30 × 99 =
  19. 19.11 × 49 =
  20. 20.3 × 29 =
  21. 21.15 × 98 =
  22. 22.20 × 99 =
  23. 23.23 × 98 =
  24. 24.13 × 9 =
  25. 25.34 × 98 =
  26. 26.14 × 29 =
  27. 27.31 × 98 =
  28. 28.34 × 98 =
  29. 29.3 × 19 =
  30. 30.6 × 9 =
  31. 31.8 × 9 =
  32. 32.15 × 19 =
  33. 33.5 × 9 =
  34. 34.36 × 99 =
  35. 35.9 × 9 =
  36. 36.9 × 98 =
  37. 37.5 × 9 =
  38. 38.7 × 9 =
  39. 39.15 × 49 =
  40. 40.7 × 19 =

Answer key

  1. 27
  2. 45
  3. 245
  4. 209
  5. 348
  6. 247
  7. 203
  8. 57
  9. 539
  10. 81
  11. 1485
  12. 637
  13. 171
  14. 72
  15. 76
  16. 1176
  17. 209
  18. 2970
  19. 539
  20. 87
  21. 1470
  22. 1980
  23. 2254
  24. 117
  25. 3332
  26. 406
  27. 3038
  28. 3332
  29. 57
  30. 54
  31. 72
  32. 285
  33. 45
  34. 3564
  35. 81
  36. 882
  37. 45
  38. 63
  39. 735
  40. 133

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