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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 301 · 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. 1.7 × 29 =
  2. 2.6 × 9 =
  3. 3.14 × 98 =
  4. 4.16 × 99 =
  5. 5.7 × 49 =
  6. 6.6 × 9 =
  7. 7.9 × 29 =
  8. 8.3 × 9 =
  9. 9.14 × 9 =
  10. 10.8 × 9 =
  11. 11.5 × 19 =
  12. 12.9 × 19 =
  13. 13.34 × 99 =
  14. 14.39 × 98 =
  15. 15.11 × 98 =
  16. 16.9 × 29 =
  17. 17.3 × 9 =
  18. 18.3 × 9 =
  19. 19.9 × 9 =
  20. 20.8 × 9 =
  21. 21.8 × 49 =
  22. 22.13 × 9 =
  23. 23.6 × 98 =
  24. 24.7 × 29 =
  25. 25.25 × 98 =
  26. 26.10 × 9 =
  27. 27.7 × 98 =
  28. 28.6 × 9 =
  29. 29.8 × 29 =
  30. 30.6 × 19 =
  31. 31.11 × 9 =
  32. 32.7 × 29 =
  33. 33.7 × 29 =
  34. 34.12 × 98 =
  35. 35.11 × 9 =
  36. 36.11 × 19 =
  37. 37.4 × 19 =
  38. 38.4 × 9 =
  39. 39.5 × 19 =
  40. 40.13 × 19 =

Answer key

  1. 203
  2. 54
  3. 1372
  4. 1584
  5. 343
  6. 54
  7. 261
  8. 27
  9. 126
  10. 72
  11. 95
  12. 171
  13. 3366
  14. 3822
  15. 1078
  16. 261
  17. 27
  18. 27
  19. 81
  20. 72
  21. 392
  22. 117
  23. 588
  24. 203
  25. 2450
  26. 90
  27. 686
  28. 54
  29. 232
  30. 114
  31. 99
  32. 203
  33. 203
  34. 1176
  35. 99
  36. 209
  37. 76
  38. 36
  39. 95
  40. 247

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