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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 508 · 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. 1.3 × 9 =
  2. 2.35 × 98 =
  3. 3.12 × 19 =
  4. 4.10 × 98 =
  5. 5.11 × 19 =
  6. 6.23 × 98 =
  7. 7.14 × 29 =
  8. 8.3 × 19 =
  9. 9.14 × 9 =
  10. 10.11 × 99 =
  11. 11.13 × 9 =
  12. 12.6 × 9 =
  13. 13.14 × 19 =
  14. 14.10 × 49 =
  15. 15.6 × 49 =
  16. 16.10 × 29 =
  17. 17.10 × 98 =
  18. 18.14 × 9 =
  19. 19.7 × 19 =
  20. 20.6 × 29 =
  21. 21.14 × 19 =
  22. 22.12 × 49 =
  23. 23.3 × 29 =
  24. 24.4 × 9 =
  25. 25.10 × 9 =
  26. 26.12 × 49 =
  27. 27.6 × 49 =
  28. 28.3 × 19 =
  29. 29.3 × 9 =
  30. 30.13 × 19 =
  31. 31.8 × 19 =
  32. 32.11 × 9 =
  33. 33.6 × 9 =
  34. 34.3 × 9 =
  35. 35.6 × 49 =
  36. 36.4 × 19 =
  37. 37.4 × 9 =
  38. 38.12 × 9 =
  39. 39.11 × 99 =
  40. 40.14 × 49 =

Answer key

  1. 27
  2. 3430
  3. 228
  4. 980
  5. 209
  6. 2254
  7. 406
  8. 57
  9. 126
  10. 1089
  11. 117
  12. 54
  13. 266
  14. 490
  15. 294
  16. 290
  17. 980
  18. 126
  19. 133
  20. 174
  21. 266
  22. 588
  23. 87
  24. 36
  25. 90
  26. 588
  27. 294
  28. 57
  29. 27
  30. 247
  31. 152
  32. 99
  33. 54
  34. 27
  35. 294
  36. 76
  37. 36
  38. 108
  39. 1089
  40. 686

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