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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 883 · 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. 1.14 × 49 =
  2. 2.20 × 99 =
  3. 3.6 × 19 =
  4. 4.15 × 19 =
  5. 5.5 × 49 =
  6. 6.24 × 98 =
  7. 7.15 × 99 =
  8. 8.4 × 9 =
  9. 9.33 × 98 =
  10. 10.5 × 99 =
  11. 11.4 × 29 =
  12. 12.23 × 99 =
  13. 13.13 × 9 =
  14. 14.15 × 49 =
  15. 15.11 × 49 =
  16. 16.5 × 49 =
  17. 17.13 × 9 =
  18. 18.3 × 19 =
  19. 19.11 × 29 =
  20. 20.13 × 99 =
  21. 21.37 × 98 =
  22. 22.18 × 99 =
  23. 23.7 × 99 =
  24. 24.4 × 9 =
  25. 25.6 × 29 =
  26. 26.10 × 29 =
  27. 27.34 × 99 =
  28. 28.5 × 9 =
  29. 29.8 × 98 =
  30. 30.5 × 9 =
  31. 31.11 × 98 =
  32. 32.25 × 99 =
  33. 33.14 × 9 =
  34. 34.4 × 9 =
  35. 35.26 × 99 =
  36. 36.20 × 98 =
  37. 37.3 × 19 =
  38. 38.7 × 9 =
  39. 39.15 × 19 =
  40. 40.12 × 29 =

Answer key

  1. 686
  2. 1980
  3. 114
  4. 285
  5. 245
  6. 2352
  7. 1485
  8. 36
  9. 3234
  10. 495
  11. 116
  12. 2277
  13. 117
  14. 735
  15. 539
  16. 245
  17. 117
  18. 57
  19. 319
  20. 1287
  21. 3626
  22. 1782
  23. 693
  24. 36
  25. 174
  26. 290
  27. 3366
  28. 45
  29. 784
  30. 45
  31. 1078
  32. 2475
  33. 126
  34. 36
  35. 2574
  36. 1960
  37. 57
  38. 63
  39. 285
  40. 348

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