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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 157 · 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. 1.29 × 99 =
  2. 2.6 × 9 =
  3. 3.4 × 29 =
  4. 4.11 × 9 =
  5. 5.10 × 9 =
  6. 6.3 × 49 =
  7. 7.9 × 9 =
  8. 8.6 × 29 =
  9. 9.4 × 9 =
  10. 10.12 × 99 =
  11. 11.7 × 49 =
  12. 12.3 × 19 =
  13. 13.7 × 29 =
  14. 14.8 × 9 =
  15. 15.15 × 19 =
  16. 16.6 × 19 =
  17. 17.13 × 29 =
  18. 18.10 × 49 =
  19. 19.8 × 19 =
  20. 20.15 × 19 =
  21. 21.7 × 29 =
  22. 22.3 × 49 =
  23. 23.14 × 99 =
  24. 24.6 × 9 =
  25. 25.4 × 49 =
  26. 26.15 × 19 =
  27. 27.4 × 49 =
  28. 28.12 × 9 =
  29. 29.5 × 9 =
  30. 30.4 × 9 =
  31. 31.12 × 19 =
  32. 32.3 × 49 =
  33. 33.10 × 9 =
  34. 34.39 × 99 =
  35. 35.6 × 29 =
  36. 36.7 × 98 =
  37. 37.8 × 9 =
  38. 38.3 × 49 =
  39. 39.14 × 99 =
  40. 40.6 × 29 =

Answer key

  1. 2871
  2. 54
  3. 116
  4. 99
  5. 90
  6. 147
  7. 81
  8. 174
  9. 36
  10. 1188
  11. 343
  12. 57
  13. 203
  14. 72
  15. 285
  16. 114
  17. 377
  18. 490
  19. 152
  20. 285
  21. 203
  22. 147
  23. 1386
  24. 54
  25. 196
  26. 285
  27. 196
  28. 108
  29. 45
  30. 36
  31. 228
  32. 147
  33. 90
  34. 3861
  35. 174
  36. 686
  37. 72
  38. 147
  39. 1386
  40. 174

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