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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 304 · 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. 1.34 × 98 =
  2. 2.8 × 9 =
  3. 3.9 × 29 =
  4. 4.35 × 98 =
  5. 5.5 × 99 =
  6. 6.13 × 49 =
  7. 7.7 × 19 =
  8. 8.10 × 99 =
  9. 9.6 × 9 =
  10. 10.40 × 98 =
  11. 11.3 × 9 =
  12. 12.14 × 98 =
  13. 13.14 × 9 =
  14. 14.12 × 19 =
  15. 15.3 × 99 =
  16. 16.11 × 49 =
  17. 17.26 × 98 =
  18. 18.14 × 29 =
  19. 19.5 × 19 =
  20. 20.14 × 19 =
  21. 21.9 × 29 =
  22. 22.9 × 49 =
  23. 23.11 × 9 =
  24. 24.13 × 49 =
  25. 25.4 × 29 =
  26. 26.31 × 99 =
  27. 27.3 × 19 =
  28. 28.11 × 49 =
  29. 29.11 × 9 =
  30. 30.15 × 99 =
  31. 31.13 × 49 =
  32. 32.37 × 99 =
  33. 33.10 × 98 =
  34. 34.6 × 9 =
  35. 35.15 × 98 =
  36. 36.11 × 9 =
  37. 37.37 × 99 =
  38. 38.5 × 49 =
  39. 39.11 × 49 =
  40. 40.8 × 99 =

Answer key

  1. 3332
  2. 72
  3. 261
  4. 3430
  5. 495
  6. 637
  7. 133
  8. 990
  9. 54
  10. 3920
  11. 27
  12. 1372
  13. 126
  14. 228
  15. 297
  16. 539
  17. 2548
  18. 406
  19. 95
  20. 266
  21. 261
  22. 441
  23. 99
  24. 637
  25. 116
  26. 3069
  27. 57
  28. 539
  29. 99
  30. 1485
  31. 637
  32. 3663
  33. 980
  34. 54
  35. 1470
  36. 99
  37. 3663
  38. 245
  39. 539
  40. 792

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