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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 410 · 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. 1.15 × 29 =
  2. 2.8 × 19 =
  3. 3.11 × 98 =
  4. 4.8 × 49 =
  5. 5.14 × 29 =
  6. 6.8 × 98 =
  7. 7.9 × 98 =
  8. 8.29 × 99 =
  9. 9.4 × 9 =
  10. 10.11 × 19 =
  11. 11.31 × 98 =
  12. 12.6 × 49 =
  13. 13.14 × 19 =
  14. 14.10 × 19 =
  15. 15.7 × 9 =
  16. 16.7 × 29 =
  17. 17.14 × 9 =
  18. 18.13 × 19 =
  19. 19.19 × 98 =
  20. 20.9 × 29 =
  21. 21.3 × 9 =
  22. 22.7 × 9 =
  23. 23.8 × 49 =
  24. 24.6 × 19 =
  25. 25.5 × 9 =
  26. 26.10 × 29 =
  27. 27.5 × 49 =
  28. 28.9 × 9 =
  29. 29.21 × 98 =
  30. 30.8 × 49 =
  31. 31.14 × 19 =
  32. 32.5 × 19 =
  33. 33.8 × 9 =
  34. 34.20 × 98 =
  35. 35.9 × 9 =
  36. 36.6 × 9 =
  37. 37.8 × 9 =
  38. 38.11 × 9 =
  39. 39.4 × 29 =
  40. 40.6 × 49 =

Answer key

  1. 435
  2. 152
  3. 1078
  4. 392
  5. 406
  6. 784
  7. 882
  8. 2871
  9. 36
  10. 209
  11. 3038
  12. 294
  13. 266
  14. 190
  15. 63
  16. 203
  17. 126
  18. 247
  19. 1862
  20. 261
  21. 27
  22. 63
  23. 392
  24. 114
  25. 45
  26. 290
  27. 245
  28. 81
  29. 2058
  30. 392
  31. 266
  32. 95
  33. 72
  34. 1960
  35. 81
  36. 54
  37. 72
  38. 99
  39. 116
  40. 294

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