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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 467 · 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 × 19 =
  2. 2.8 × 29 =
  3. 3.8 × 9 =
  4. 4.3 × 9 =
  5. 5.37 × 98 =
  6. 6.4 × 19 =
  7. 7.5 × 9 =
  8. 8.9 × 29 =
  9. 9.27 × 99 =
  10. 10.7 × 98 =
  11. 11.7 × 9 =
  12. 12.5 × 29 =
  13. 13.10 × 99 =
  14. 14.11 × 29 =
  15. 15.13 × 29 =
  16. 16.7 × 19 =
  17. 17.4 × 49 =
  18. 18.34 × 98 =
  19. 19.15 × 19 =
  20. 20.6 × 9 =
  21. 21.12 × 98 =
  22. 22.5 × 19 =
  23. 23.7 × 9 =
  24. 24.3 × 19 =
  25. 25.12 × 9 =
  26. 26.7 × 19 =
  27. 27.8 × 29 =
  28. 28.3 × 19 =
  29. 29.16 × 98 =
  30. 30.14 × 29 =
  31. 31.3 × 9 =
  32. 32.13 × 49 =
  33. 33.13 × 98 =
  34. 34.12 × 9 =
  35. 35.3 × 9 =
  36. 36.6 × 9 =
  37. 37.19 × 99 =
  38. 38.5 × 29 =
  39. 39.5 × 29 =
  40. 40.3 × 9 =

Answer key

  1. 152
  2. 232
  3. 72
  4. 27
  5. 3626
  6. 76
  7. 45
  8. 261
  9. 2673
  10. 686
  11. 63
  12. 145
  13. 990
  14. 319
  15. 377
  16. 133
  17. 196
  18. 3332
  19. 285
  20. 54
  21. 1176
  22. 95
  23. 63
  24. 57
  25. 108
  26. 133
  27. 232
  28. 57
  29. 1568
  30. 406
  31. 27
  32. 637
  33. 1274
  34. 108
  35. 27
  36. 54
  37. 1881
  38. 145
  39. 145
  40. 27

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