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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 917 · 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. 1.16 × 99 =
  2. 2.14 × 9 =
  3. 3.11 × 49 =
  4. 4.16 × 98 =
  5. 5.6 × 19 =
  6. 6.10 × 9 =
  7. 7.12 × 9 =
  8. 8.15 × 49 =
  9. 9.15 × 49 =
  10. 10.4 × 49 =
  11. 11.9 × 29 =
  12. 12.5 × 49 =
  13. 13.5 × 98 =
  14. 14.11 × 98 =
  15. 15.11 × 19 =
  16. 16.40 × 99 =
  17. 17.34 × 99 =
  18. 18.4 × 49 =
  19. 19.37 × 98 =
  20. 20.19 × 98 =
  21. 21.4 × 98 =
  22. 22.5 × 49 =
  23. 23.6 × 49 =
  24. 24.12 × 29 =
  25. 25.30 × 98 =
  26. 26.10 × 19 =
  27. 27.4 × 19 =
  28. 28.24 × 98 =
  29. 29.5 × 9 =
  30. 30.9 × 9 =
  31. 31.16 × 98 =
  32. 32.6 × 29 =
  33. 33.25 × 99 =
  34. 34.21 × 98 =
  35. 35.6 × 19 =
  36. 36.13 × 49 =
  37. 37.22 × 98 =
  38. 38.3 × 29 =
  39. 39.9 × 9 =
  40. 40.4 × 99 =

Answer key

  1. 1584
  2. 126
  3. 539
  4. 1568
  5. 114
  6. 90
  7. 108
  8. 735
  9. 735
  10. 196
  11. 261
  12. 245
  13. 490
  14. 1078
  15. 209
  16. 3960
  17. 3366
  18. 196
  19. 3626
  20. 1862
  21. 392
  22. 245
  23. 294
  24. 348
  25. 2940
  26. 190
  27. 76
  28. 2352
  29. 45
  30. 81
  31. 1568
  32. 174
  33. 2475
  34. 2058
  35. 114
  36. 637
  37. 2156
  38. 87
  39. 81
  40. 396

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