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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 262 · 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. 2.15 × 19 =
  3. 3.5 × 9 =
  4. 4.18 × 98 =
  5. 5.4 × 9 =
  6. 6.12 × 19 =
  7. 7.14 × 19 =
  8. 8.14 × 19 =
  9. 9.12 × 98 =
  10. 10.3 × 19 =
  11. 11.39 × 99 =
  12. 12.12 × 19 =
  13. 13.3 × 29 =
  14. 14.13 × 29 =
  15. 15.6 × 29 =
  16. 16.11 × 29 =
  17. 17.3 × 29 =
  18. 18.11 × 19 =
  19. 19.4 × 29 =
  20. 20.40 × 98 =
  21. 21.8 × 98 =
  22. 22.3 × 19 =
  23. 23.3 × 29 =
  24. 24.7 × 99 =
  25. 25.14 × 29 =
  26. 26.8 × 49 =
  27. 27.15 × 29 =
  28. 28.8 × 9 =
  29. 29.6 × 29 =
  30. 30.7 × 99 =
  31. 31.11 × 19 =
  32. 32.12 × 29 =
  33. 33.6 × 19 =
  34. 34.7 × 9 =
  35. 35.5 × 29 =
  36. 36.29 × 98 =
  37. 37.8 × 29 =
  38. 38.6 × 99 =
  39. 39.10 × 29 =
  40. 40.9 × 29 =

Answer key

  1. 294
  2. 285
  3. 45
  4. 1764
  5. 36
  6. 228
  7. 266
  8. 266
  9. 1176
  10. 57
  11. 3861
  12. 228
  13. 87
  14. 377
  15. 174
  16. 319
  17. 87
  18. 209
  19. 116
  20. 3920
  21. 784
  22. 57
  23. 87
  24. 693
  25. 406
  26. 392
  27. 435
  28. 72
  29. 174
  30. 693
  31. 209
  32. 348
  33. 114
  34. 63
  35. 145
  36. 2842
  37. 232
  38. 594
  39. 290
  40. 261

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