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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 862 · 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. 1.8 × 9 =
  2. 2.6 × 19 =
  3. 3.9 × 98 =
  4. 4.9 × 19 =
  5. 5.11 × 9 =
  6. 6.3 × 98 =
  7. 7.13 × 29 =
  8. 8.14 × 19 =
  9. 9.15 × 49 =
  10. 10.14 × 49 =
  11. 11.8 × 9 =
  12. 12.13 × 99 =
  13. 13.3 × 19 =
  14. 14.36 × 99 =
  15. 15.39 × 98 =
  16. 16.5 × 19 =
  17. 17.6 × 9 =
  18. 18.9 × 98 =
  19. 19.17 × 98 =
  20. 20.31 × 98 =
  21. 21.7 × 99 =
  22. 22.19 × 98 =
  23. 23.9 × 19 =
  24. 24.20 × 98 =
  25. 25.21 × 98 =
  26. 26.10 × 19 =
  27. 27.11 × 19 =
  28. 28.15 × 98 =
  29. 29.5 × 9 =
  30. 30.14 × 19 =
  31. 31.32 × 99 =
  32. 32.14 × 49 =
  33. 33.6 × 29 =
  34. 34.7 × 29 =
  35. 35.4 × 29 =
  36. 36.3 × 29 =
  37. 37.15 × 19 =
  38. 38.4 × 9 =
  39. 39.21 × 99 =
  40. 40.13 × 19 =

Answer key

  1. 72
  2. 114
  3. 882
  4. 171
  5. 99
  6. 294
  7. 377
  8. 266
  9. 735
  10. 686
  11. 72
  12. 1287
  13. 57
  14. 3564
  15. 3822
  16. 95
  17. 54
  18. 882
  19. 1666
  20. 3038
  21. 693
  22. 1862
  23. 171
  24. 1960
  25. 2058
  26. 190
  27. 209
  28. 1470
  29. 45
  30. 266
  31. 3168
  32. 686
  33. 174
  34. 203
  35. 116
  36. 87
  37. 285
  38. 36
  39. 2079
  40. 247

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