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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 695 · 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. 1.10 × 9 =
  2. 2.15 × 49 =
  3. 3.11 × 49 =
  4. 4.6 × 98 =
  5. 5.14 × 29 =
  6. 6.9 × 49 =
  7. 7.15 × 49 =
  8. 8.10 × 9 =
  9. 9.12 × 9 =
  10. 10.3 × 19 =
  11. 11.15 × 49 =
  12. 12.8 × 98 =
  13. 13.13 × 19 =
  14. 14.7 × 49 =
  15. 15.12 × 29 =
  16. 16.14 × 98 =
  17. 17.34 × 98 =
  18. 18.8 × 49 =
  19. 19.8 × 9 =
  20. 20.12 × 49 =
  21. 21.36 × 98 =
  22. 22.4 × 29 =
  23. 23.24 × 98 =
  24. 24.8 × 19 =
  25. 25.5 × 29 =
  26. 26.6 × 29 =
  27. 27.10 × 19 =
  28. 28.14 × 29 =
  29. 29.7 × 9 =
  30. 30.37 × 99 =
  31. 31.15 × 9 =
  32. 32.15 × 29 =
  33. 33.3 × 9 =
  34. 34.6 × 19 =
  35. 35.11 × 9 =
  36. 36.20 × 99 =
  37. 37.12 × 19 =
  38. 38.4 × 9 =
  39. 39.13 × 29 =
  40. 40.8 × 29 =

Answer key

  1. 90
  2. 735
  3. 539
  4. 588
  5. 406
  6. 441
  7. 735
  8. 90
  9. 108
  10. 57
  11. 735
  12. 784
  13. 247
  14. 343
  15. 348
  16. 1372
  17. 3332
  18. 392
  19. 72
  20. 588
  21. 3528
  22. 116
  23. 2352
  24. 152
  25. 145
  26. 174
  27. 190
  28. 406
  29. 63
  30. 3663
  31. 135
  32. 435
  33. 27
  34. 114
  35. 99
  36. 1980
  37. 228
  38. 36
  39. 377
  40. 232

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