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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 727 · 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. 1.13 × 19 =
  2. 2.7 × 9 =
  3. 3.8 × 98 =
  4. 4.9 × 98 =
  5. 5.5 × 9 =
  6. 6.3 × 19 =
  7. 7.8 × 49 =
  8. 8.8 × 19 =
  9. 9.12 × 9 =
  10. 10.11 × 9 =
  11. 11.3 × 29 =
  12. 12.13 × 29 =
  13. 13.6 × 29 =
  14. 14.4 × 19 =
  15. 15.6 × 19 =
  16. 16.7 × 19 =
  17. 17.14 × 98 =
  18. 18.7 × 9 =
  19. 19.20 × 98 =
  20. 20.3 × 9 =
  21. 21.17 × 99 =
  22. 22.6 × 98 =
  23. 23.15 × 9 =
  24. 24.12 × 19 =
  25. 25.15 × 19 =
  26. 26.28 × 99 =
  27. 27.14 × 99 =
  28. 28.32 × 99 =
  29. 29.8 × 49 =
  30. 30.7 × 49 =
  31. 31.11 × 9 =
  32. 32.24 × 99 =
  33. 33.6 × 19 =
  34. 34.6 × 9 =
  35. 35.12 × 9 =
  36. 36.11 × 19 =
  37. 37.8 × 19 =
  38. 38.11 × 19 =
  39. 39.11 × 49 =
  40. 40.4 × 9 =

Answer key

  1. 247
  2. 63
  3. 784
  4. 882
  5. 45
  6. 57
  7. 392
  8. 152
  9. 108
  10. 99
  11. 87
  12. 377
  13. 174
  14. 76
  15. 114
  16. 133
  17. 1372
  18. 63
  19. 1960
  20. 27
  21. 1683
  22. 588
  23. 135
  24. 228
  25. 285
  26. 2772
  27. 1386
  28. 3168
  29. 392
  30. 343
  31. 99
  32. 2376
  33. 114
  34. 54
  35. 108
  36. 209
  37. 152
  38. 209
  39. 539
  40. 36

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