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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 269 · 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 × 49 =
  2. 2.7 × 19 =
  3. 3.5 × 98 =
  4. 4.3 × 99 =
  5. 5.28 × 99 =
  6. 6.3 × 29 =
  7. 7.24 × 98 =
  8. 8.6 × 19 =
  9. 9.15 × 29 =
  10. 10.20 × 99 =
  11. 11.6 × 19 =
  12. 12.5 × 19 =
  13. 13.13 × 9 =
  14. 14.35 × 99 =
  15. 15.7 × 19 =
  16. 16.13 × 29 =
  17. 17.4 × 9 =
  18. 18.9 × 29 =
  19. 19.5 × 19 =
  20. 20.5 × 19 =
  21. 21.21 × 98 =
  22. 22.15 × 98 =
  23. 23.7 × 98 =
  24. 24.12 × 98 =
  25. 25.12 × 29 =
  26. 26.5 × 49 =
  27. 27.12 × 19 =
  28. 28.13 × 9 =
  29. 29.12 × 19 =
  30. 30.4 × 9 =
  31. 31.5 × 9 =
  32. 32.3 × 9 =
  33. 33.13 × 9 =
  34. 34.8 × 9 =
  35. 35.14 × 19 =
  36. 36.11 × 19 =
  37. 37.32 × 98 =
  38. 38.3 × 19 =
  39. 39.14 × 9 =
  40. 40.9 × 29 =

Answer key

  1. 686
  2. 133
  3. 490
  4. 297
  5. 2772
  6. 87
  7. 2352
  8. 114
  9. 435
  10. 1980
  11. 114
  12. 95
  13. 117
  14. 3465
  15. 133
  16. 377
  17. 36
  18. 261
  19. 95
  20. 95
  21. 2058
  22. 1470
  23. 686
  24. 1176
  25. 348
  26. 245
  27. 228
  28. 117
  29. 228
  30. 36
  31. 45
  32. 27
  33. 117
  34. 72
  35. 266
  36. 209
  37. 3136
  38. 57
  39. 126
  40. 261

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