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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 687 · 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. 1.13 × 19 =
  2. 2.10 × 99 =
  3. 3.3 × 19 =
  4. 4.11 × 99 =
  5. 5.6 × 49 =
  6. 6.26 × 99 =
  7. 7.14 × 9 =
  8. 8.3 × 29 =
  9. 9.6 × 9 =
  10. 10.8 × 29 =
  11. 11.7 × 49 =
  12. 12.15 × 9 =
  13. 13.12 × 9 =
  14. 14.8 × 9 =
  15. 15.25 × 99 =
  16. 16.24 × 99 =
  17. 17.28 × 99 =
  18. 18.14 × 19 =
  19. 19.12 × 29 =
  20. 20.5 × 49 =
  21. 21.14 × 49 =
  22. 22.27 × 99 =
  23. 23.5 × 99 =
  24. 24.36 × 98 =
  25. 25.14 × 19 =
  26. 26.3 × 9 =
  27. 27.10 × 29 =
  28. 28.3 × 9 =
  29. 29.4 × 29 =
  30. 30.13 × 99 =
  31. 31.8 × 29 =
  32. 32.12 × 9 =
  33. 33.21 × 99 =
  34. 34.5 × 49 =
  35. 35.5 × 29 =
  36. 36.10 × 98 =
  37. 37.4 × 9 =
  38. 38.10 × 49 =
  39. 39.16 × 98 =
  40. 40.6 × 19 =

Answer key

  1. 247
  2. 990
  3. 57
  4. 1089
  5. 294
  6. 2574
  7. 126
  8. 87
  9. 54
  10. 232
  11. 343
  12. 135
  13. 108
  14. 72
  15. 2475
  16. 2376
  17. 2772
  18. 266
  19. 348
  20. 245
  21. 686
  22. 2673
  23. 495
  24. 3528
  25. 266
  26. 27
  27. 290
  28. 27
  29. 116
  30. 1287
  31. 232
  32. 108
  33. 2079
  34. 245
  35. 145
  36. 980
  37. 36
  38. 490
  39. 1568
  40. 114

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