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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 568 · 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. 1.6 × 49 =
  2. 2.10 × 49 =
  3. 3.14 × 29 =
  4. 4.3 × 19 =
  5. 5.8 × 19 =
  6. 6.13 × 49 =
  7. 7.16 × 98 =
  8. 8.25 × 98 =
  9. 9.9 × 19 =
  10. 10.8 × 9 =
  11. 11.36 × 99 =
  12. 12.10 × 49 =
  13. 13.12 × 99 =
  14. 14.3 × 19 =
  15. 15.37 × 99 =
  16. 16.11 × 49 =
  17. 17.11 × 49 =
  18. 18.15 × 19 =
  19. 19.21 × 99 =
  20. 20.5 × 9 =
  21. 21.14 × 19 =
  22. 22.31 × 98 =
  23. 23.3 × 49 =
  24. 24.9 × 19 =
  25. 25.15 × 29 =
  26. 26.15 × 98 =
  27. 27.6 × 99 =
  28. 28.3 × 19 =
  29. 29.4 × 49 =
  30. 30.13 × 19 =
  31. 31.8 × 49 =
  32. 32.4 × 49 =
  33. 33.7 × 19 =
  34. 34.15 × 99 =
  35. 35.35 × 98 =
  36. 36.40 × 99 =
  37. 37.30 × 98 =
  38. 38.3 × 9 =
  39. 39.12 × 9 =
  40. 40.30 × 98 =

Answer key

  1. 294
  2. 490
  3. 406
  4. 57
  5. 152
  6. 637
  7. 1568
  8. 2450
  9. 171
  10. 72
  11. 3564
  12. 490
  13. 1188
  14. 57
  15. 3663
  16. 539
  17. 539
  18. 285
  19. 2079
  20. 45
  21. 266
  22. 3038
  23. 147
  24. 171
  25. 435
  26. 1470
  27. 594
  28. 57
  29. 196
  30. 247
  31. 392
  32. 196
  33. 133
  34. 1485
  35. 3430
  36. 3960
  37. 2940
  38. 27
  39. 108
  40. 2940

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