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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 600 · 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 × 19 =
  2. 2.7 × 98 =
  3. 3.10 × 19 =
  4. 4.3 × 19 =
  5. 5.9 × 9 =
  6. 6.10 × 9 =
  7. 7.27 × 98 =
  8. 8.8 × 29 =
  9. 9.12 × 9 =
  10. 10.12 × 19 =
  11. 11.4 × 98 =
  12. 12.12 × 9 =
  13. 13.6 × 19 =
  14. 14.4 × 19 =
  15. 15.14 × 19 =
  16. 16.9 × 98 =
  17. 17.5 × 49 =
  18. 18.30 × 98 =
  19. 19.11 × 98 =
  20. 20.9 × 49 =
  21. 21.3 × 9 =
  22. 22.32 × 98 =
  23. 23.8 × 9 =
  24. 24.8 × 98 =
  25. 25.5 × 9 =
  26. 26.7 × 29 =
  27. 27.9 × 29 =
  28. 28.8 × 19 =
  29. 29.5 × 19 =
  30. 30.4 × 19 =
  31. 31.14 × 9 =
  32. 32.15 × 29 =
  33. 33.34 × 98 =
  34. 34.6 × 49 =
  35. 35.5 × 49 =
  36. 36.12 × 19 =
  37. 37.9 × 98 =
  38. 38.33 × 99 =
  39. 39.10 × 19 =
  40. 40.5 × 9 =

Answer key

  1. 114
  2. 686
  3. 190
  4. 57
  5. 81
  6. 90
  7. 2646
  8. 232
  9. 108
  10. 228
  11. 392
  12. 108
  13. 114
  14. 76
  15. 266
  16. 882
  17. 245
  18. 2940
  19. 1078
  20. 441
  21. 27
  22. 3136
  23. 72
  24. 784
  25. 45
  26. 203
  27. 261
  28. 152
  29. 95
  30. 76
  31. 126
  32. 435
  33. 3332
  34. 294
  35. 245
  36. 228
  37. 882
  38. 3267
  39. 190
  40. 45

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