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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 501 · 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. 1.14 × 9 =
  2. 2.26 × 98 =
  3. 3.13 × 19 =
  4. 4.14 × 29 =
  5. 5.13 × 29 =
  6. 6.5 × 9 =
  7. 7.32 × 98 =
  8. 8.11 × 19 =
  9. 9.3 × 98 =
  10. 10.6 × 49 =
  11. 11.12 × 9 =
  12. 12.12 × 19 =
  13. 13.15 × 49 =
  14. 14.21 × 98 =
  15. 15.31 × 98 =
  16. 16.15 × 9 =
  17. 17.10 × 29 =
  18. 18.15 × 19 =
  19. 19.36 × 99 =
  20. 20.3 × 19 =
  21. 21.7 × 19 =
  22. 22.4 × 19 =
  23. 23.13 × 29 =
  24. 24.5 × 49 =
  25. 25.3 × 19 =
  26. 26.11 × 29 =
  27. 27.4 × 99 =
  28. 28.3 × 9 =
  29. 29.18 × 99 =
  30. 30.15 × 49 =
  31. 31.36 × 99 =
  32. 32.3 × 19 =
  33. 33.6 × 99 =
  34. 34.15 × 9 =
  35. 35.13 × 49 =
  36. 36.14 × 49 =
  37. 37.24 × 98 =
  38. 38.11 × 29 =
  39. 39.4 × 9 =
  40. 40.6 × 49 =

Answer key

  1. 126
  2. 2548
  3. 247
  4. 406
  5. 377
  6. 45
  7. 3136
  8. 209
  9. 294
  10. 294
  11. 108
  12. 228
  13. 735
  14. 2058
  15. 3038
  16. 135
  17. 290
  18. 285
  19. 3564
  20. 57
  21. 133
  22. 76
  23. 377
  24. 245
  25. 57
  26. 319
  27. 396
  28. 27
  29. 1782
  30. 735
  31. 3564
  32. 57
  33. 594
  34. 135
  35. 637
  36. 686
  37. 2352
  38. 319
  39. 36
  40. 294

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