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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 64 · 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 × 49 =
  2. 2.5 × 99 =
  3. 3.15 × 9 =
  4. 4.6 × 9 =
  5. 5.7 × 9 =
  6. 6.11 × 29 =
  7. 7.13 × 29 =
  8. 8.3 × 9 =
  9. 9.8 × 9 =
  10. 10.9 × 98 =
  11. 11.4 × 49 =
  12. 12.9 × 9 =
  13. 13.5 × 29 =
  14. 14.4 × 9 =
  15. 15.3 × 98 =
  16. 16.21 × 98 =
  17. 17.14 × 19 =
  18. 18.11 × 98 =
  19. 19.22 × 99 =
  20. 20.5 × 19 =
  21. 21.4 × 19 =
  22. 22.8 × 19 =
  23. 23.5 × 49 =
  24. 24.15 × 49 =
  25. 25.3 × 29 =
  26. 26.7 × 29 =
  27. 27.6 × 9 =
  28. 28.7 × 99 =
  29. 29.4 × 29 =
  30. 30.7 × 49 =
  31. 31.7 × 29 =
  32. 32.11 × 29 =
  33. 33.5 × 9 =
  34. 34.38 × 99 =
  35. 35.13 × 9 =
  36. 36.7 × 19 =
  37. 37.10 × 19 =
  38. 38.16 × 99 =
  39. 39.11 × 98 =
  40. 40.3 × 29 =

Answer key

  1. 490
  2. 495
  3. 135
  4. 54
  5. 63
  6. 319
  7. 377
  8. 27
  9. 72
  10. 882
  11. 196
  12. 81
  13. 145
  14. 36
  15. 294
  16. 2058
  17. 266
  18. 1078
  19. 2178
  20. 95
  21. 76
  22. 152
  23. 245
  24. 735
  25. 87
  26. 203
  27. 54
  28. 693
  29. 116
  30. 343
  31. 203
  32. 319
  33. 45
  34. 3762
  35. 117
  36. 133
  37. 190
  38. 1584
  39. 1078
  40. 87

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