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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 916 · 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. 1.6 × 19 =
  2. 2.21 × 98 =
  3. 3.28 × 98 =
  4. 4.12 × 19 =
  5. 5.11 × 49 =
  6. 6.12 × 9 =
  7. 7.14 × 49 =
  8. 8.12 × 19 =
  9. 9.4 × 49 =
  10. 10.16 × 98 =
  11. 11.3 × 19 =
  12. 12.33 × 99 =
  13. 13.11 × 9 =
  14. 14.8 × 29 =
  15. 15.6 × 19 =
  16. 16.8 × 29 =
  17. 17.3 × 19 =
  18. 18.20 × 99 =
  19. 19.15 × 29 =
  20. 20.6 × 49 =
  21. 21.11 × 9 =
  22. 22.11 × 29 =
  23. 23.5 × 99 =
  24. 24.13 × 9 =
  25. 25.6 × 19 =
  26. 26.13 × 19 =
  27. 27.31 × 99 =
  28. 28.7 × 49 =
  29. 29.3 × 9 =
  30. 30.7 × 19 =
  31. 31.5 × 49 =
  32. 32.3 × 29 =
  33. 33.25 × 98 =
  34. 34.14 × 99 =
  35. 35.5 × 19 =
  36. 36.14 × 49 =
  37. 37.5 × 19 =
  38. 38.17 × 98 =
  39. 39.3 × 29 =
  40. 40.13 × 29 =

Answer key

  1. 114
  2. 2058
  3. 2744
  4. 228
  5. 539
  6. 108
  7. 686
  8. 228
  9. 196
  10. 1568
  11. 57
  12. 3267
  13. 99
  14. 232
  15. 114
  16. 232
  17. 57
  18. 1980
  19. 435
  20. 294
  21. 99
  22. 319
  23. 495
  24. 117
  25. 114
  26. 247
  27. 3069
  28. 343
  29. 27
  30. 133
  31. 245
  32. 87
  33. 2450
  34. 1386
  35. 95
  36. 686
  37. 95
  38. 1666
  39. 87
  40. 377

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