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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 702 · 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. 2.12 × 9 =
  3. 3.18 × 99 =
  4. 4.20 × 98 =
  5. 5.8 × 9 =
  6. 6.8 × 49 =
  7. 7.15 × 19 =
  8. 8.12 × 99 =
  9. 9.10 × 98 =
  10. 10.6 × 19 =
  11. 11.7 × 29 =
  12. 12.8 × 19 =
  13. 13.11 × 9 =
  14. 14.37 × 98 =
  15. 15.10 × 99 =
  16. 16.11 × 19 =
  17. 17.8 × 29 =
  18. 18.5 × 9 =
  19. 19.8 × 29 =
  20. 20.4 × 98 =
  21. 21.15 × 9 =
  22. 22.5 × 9 =
  23. 23.12 × 49 =
  24. 24.6 × 98 =
  25. 25.5 × 19 =
  26. 26.13 × 19 =
  27. 27.6 × 29 =
  28. 28.15 × 49 =
  29. 29.7 × 19 =
  30. 30.6 × 19 =
  31. 31.11 × 99 =
  32. 32.5 × 29 =
  33. 33.14 × 19 =
  34. 34.5 × 49 =
  35. 35.15 × 19 =
  36. 36.33 × 98 =
  37. 37.6 × 29 =
  38. 38.32 × 98 =
  39. 39.12 × 19 =
  40. 40.5 × 19 =

Answer key

  1. 27
  2. 108
  3. 1782
  4. 1960
  5. 72
  6. 392
  7. 285
  8. 1188
  9. 980
  10. 114
  11. 203
  12. 152
  13. 99
  14. 3626
  15. 990
  16. 209
  17. 232
  18. 45
  19. 232
  20. 392
  21. 135
  22. 45
  23. 588
  24. 588
  25. 95
  26. 247
  27. 174
  28. 735
  29. 133
  30. 114
  31. 1089
  32. 145
  33. 266
  34. 245
  35. 285
  36. 3234
  37. 174
  38. 3136
  39. 228
  40. 95

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