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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 463 · 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 × 99 =
  2. 2.13 × 98 =
  3. 3.11 × 49 =
  4. 4.5 × 19 =
  5. 5.17 × 99 =
  6. 6.4 × 9 =
  7. 7.5 × 9 =
  8. 8.6 × 19 =
  9. 9.24 × 99 =
  10. 10.3 × 49 =
  11. 11.14 × 19 =
  12. 12.4 × 49 =
  13. 13.7 × 99 =
  14. 14.8 × 9 =
  15. 15.6 × 19 =
  16. 16.11 × 49 =
  17. 17.40 × 99 =
  18. 18.15 × 98 =
  19. 19.19 × 99 =
  20. 20.7 × 19 =
  21. 21.5 × 49 =
  22. 22.35 × 98 =
  23. 23.11 × 99 =
  24. 24.30 × 98 =
  25. 25.26 × 99 =
  26. 26.3 × 29 =
  27. 27.16 × 98 =
  28. 28.24 × 99 =
  29. 29.15 × 9 =
  30. 30.15 × 49 =
  31. 31.9 × 19 =
  32. 32.22 × 98 =
  33. 33.11 × 49 =
  34. 34.9 × 19 =
  35. 35.9 × 9 =
  36. 36.4 × 29 =
  37. 37.9 × 99 =
  38. 38.14 × 49 =
  39. 39.15 × 49 =
  40. 40.9 × 9 =

Answer key

  1. 1287
  2. 1274
  3. 539
  4. 95
  5. 1683
  6. 36
  7. 45
  8. 114
  9. 2376
  10. 147
  11. 266
  12. 196
  13. 693
  14. 72
  15. 114
  16. 539
  17. 3960
  18. 1470
  19. 1881
  20. 133
  21. 245
  22. 3430
  23. 1089
  24. 2940
  25. 2574
  26. 87
  27. 1568
  28. 2376
  29. 135
  30. 735
  31. 171
  32. 2156
  33. 539
  34. 171
  35. 81
  36. 116
  37. 891
  38. 686
  39. 735
  40. 81

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