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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 920 · 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. 1.39 × 99 =
  2. 2.12 × 19 =
  3. 3.4 × 98 =
  4. 4.32 × 98 =
  5. 5.11 × 19 =
  6. 6.5 × 29 =
  7. 7.12 × 49 =
  8. 8.13 × 29 =
  9. 9.21 × 99 =
  10. 10.7 × 99 =
  11. 11.7 × 98 =
  12. 12.36 × 99 =
  13. 13.4 × 49 =
  14. 14.16 × 99 =
  15. 15.10 × 98 =
  16. 16.20 × 99 =
  17. 17.31 × 98 =
  18. 18.6 × 9 =
  19. 19.15 × 99 =
  20. 20.30 × 99 =
  21. 21.4 × 19 =
  22. 22.9 × 49 =
  23. 23.7 × 19 =
  24. 24.15 × 98 =
  25. 25.4 × 99 =
  26. 26.11 × 49 =
  27. 27.3 × 29 =
  28. 28.7 × 29 =
  29. 29.4 × 29 =
  30. 30.22 × 98 =
  31. 31.17 × 98 =
  32. 32.14 × 49 =
  33. 33.10 × 49 =
  34. 34.5 × 19 =
  35. 35.3 × 9 =
  36. 36.3 × 29 =
  37. 37.23 × 99 =
  38. 38.11 × 99 =
  39. 39.15 × 29 =
  40. 40.4 × 29 =

Answer key

  1. 3861
  2. 228
  3. 392
  4. 3136
  5. 209
  6. 145
  7. 588
  8. 377
  9. 2079
  10. 693
  11. 686
  12. 3564
  13. 196
  14. 1584
  15. 980
  16. 1980
  17. 3038
  18. 54
  19. 1485
  20. 2970
  21. 76
  22. 441
  23. 133
  24. 1470
  25. 396
  26. 539
  27. 87
  28. 203
  29. 116
  30. 2156
  31. 1666
  32. 686
  33. 490
  34. 95
  35. 27
  36. 87
  37. 2277
  38. 1089
  39. 435
  40. 116

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