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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 233 · 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 × 29 =
  2. 2.9 × 9 =
  3. 3.7 × 98 =
  4. 4.32 × 98 =
  5. 5.13 × 29 =
  6. 6.36 × 98 =
  7. 7.11 × 99 =
  8. 8.3 × 29 =
  9. 9.10 × 29 =
  10. 10.16 × 98 =
  11. 11.33 × 99 =
  12. 12.11 × 49 =
  13. 13.4 × 19 =
  14. 14.20 × 98 =
  15. 15.12 × 99 =
  16. 16.26 × 99 =
  17. 17.15 × 29 =
  18. 18.6 × 19 =
  19. 19.19 × 99 =
  20. 20.4 × 49 =
  21. 21.4 × 29 =
  22. 22.20 × 98 =
  23. 23.13 × 49 =
  24. 24.13 × 49 =
  25. 25.10 × 9 =
  26. 26.3 × 49 =
  27. 27.5 × 9 =
  28. 28.12 × 29 =
  29. 29.30 × 99 =
  30. 30.6 × 19 =
  31. 31.9 × 9 =
  32. 32.12 × 29 =
  33. 33.11 × 19 =
  34. 34.7 × 19 =
  35. 35.10 × 29 =
  36. 36.4 × 9 =
  37. 37.9 × 49 =
  38. 38.4 × 29 =
  39. 39.19 × 98 =
  40. 40.15 × 29 =

Answer key

  1. 87
  2. 81
  3. 686
  4. 3136
  5. 377
  6. 3528
  7. 1089
  8. 87
  9. 290
  10. 1568
  11. 3267
  12. 539
  13. 76
  14. 1960
  15. 1188
  16. 2574
  17. 435
  18. 114
  19. 1881
  20. 196
  21. 116
  22. 1960
  23. 637
  24. 637
  25. 90
  26. 147
  27. 45
  28. 348
  29. 2970
  30. 114
  31. 81
  32. 348
  33. 209
  34. 133
  35. 290
  36. 36
  37. 441
  38. 116
  39. 1862
  40. 435

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