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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 273 · 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. 2.35 × 98 =
  3. 3.6 × 19 =
  4. 4.6 × 49 =
  5. 5.6 × 49 =
  6. 6.10 × 49 =
  7. 7.35 × 98 =
  8. 8.13 × 29 =
  9. 9.7 × 19 =
  10. 10.26 × 99 =
  11. 11.13 × 98 =
  12. 12.11 × 49 =
  13. 13.13 × 19 =
  14. 14.14 × 99 =
  15. 15.33 × 99 =
  16. 16.10 × 49 =
  17. 17.28 × 99 =
  18. 18.4 × 49 =
  19. 19.14 × 9 =
  20. 20.7 × 29 =
  21. 21.12 × 98 =
  22. 22.4 × 29 =
  23. 23.15 × 19 =
  24. 24.13 × 49 =
  25. 25.13 × 19 =
  26. 26.12 × 29 =
  27. 27.4 × 98 =
  28. 28.14 × 49 =
  29. 29.5 × 19 =
  30. 30.6 × 29 =
  31. 31.10 × 49 =
  32. 32.14 × 99 =
  33. 33.15 × 49 =
  34. 34.32 × 98 =
  35. 35.10 × 9 =
  36. 36.6 × 29 =
  37. 37.15 × 9 =
  38. 38.4 × 9 =
  39. 39.12 × 9 =
  40. 40.27 × 98 =

Answer key

  1. 686
  2. 3430
  3. 114
  4. 294
  5. 294
  6. 490
  7. 3430
  8. 377
  9. 133
  10. 2574
  11. 1274
  12. 539
  13. 247
  14. 1386
  15. 3267
  16. 490
  17. 2772
  18. 196
  19. 126
  20. 203
  21. 1176
  22. 116
  23. 285
  24. 637
  25. 247
  26. 348
  27. 392
  28. 686
  29. 95
  30. 174
  31. 490
  32. 1386
  33. 735
  34. 3136
  35. 90
  36. 174
  37. 135
  38. 36
  39. 108
  40. 2646

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