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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 560 · 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. 1.3 × 29 =
  2. 2.13 × 98 =
  3. 3.15 × 99 =
  4. 4.40 × 99 =
  5. 5.7 × 9 =
  6. 6.20 × 98 =
  7. 7.4 × 19 =
  8. 8.7 × 29 =
  9. 9.7 × 99 =
  10. 10.8 × 49 =
  11. 11.4 × 9 =
  12. 12.8 × 49 =
  13. 13.9 × 49 =
  14. 14.12 × 29 =
  15. 15.14 × 9 =
  16. 16.7 × 9 =
  17. 17.6 × 9 =
  18. 18.10 × 29 =
  19. 19.4 × 49 =
  20. 20.14 × 9 =
  21. 21.19 × 99 =
  22. 22.10 × 49 =
  23. 23.13 × 98 =
  24. 24.9 × 49 =
  25. 25.8 × 19 =
  26. 26.13 × 9 =
  27. 27.6 × 29 =
  28. 28.6 × 9 =
  29. 29.31 × 99 =
  30. 30.5 × 98 =
  31. 31.8 × 29 =
  32. 32.27 × 98 =
  33. 33.7 × 29 =
  34. 34.20 × 99 =
  35. 35.7 × 9 =
  36. 36.6 × 9 =
  37. 37.36 × 99 =
  38. 38.35 × 99 =
  39. 39.39 × 99 =
  40. 40.10 × 99 =

Answer key

  1. 87
  2. 1274
  3. 1485
  4. 3960
  5. 63
  6. 1960
  7. 76
  8. 203
  9. 693
  10. 392
  11. 36
  12. 392
  13. 441
  14. 348
  15. 126
  16. 63
  17. 54
  18. 290
  19. 196
  20. 126
  21. 1881
  22. 490
  23. 1274
  24. 441
  25. 152
  26. 117
  27. 174
  28. 54
  29. 3069
  30. 490
  31. 232
  32. 2646
  33. 203
  34. 1980
  35. 63
  36. 54
  37. 3564
  38. 3465
  39. 3861
  40. 990

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