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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 373 · 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 × 19 =
  2. 2.5 × 19 =
  3. 3.22 × 98 =
  4. 4.9 × 9 =
  5. 5.7 × 99 =
  6. 6.25 × 99 =
  7. 7.40 × 99 =
  8. 8.18 × 98 =
  9. 9.7 × 19 =
  10. 10.4 × 19 =
  11. 11.19 × 99 =
  12. 12.26 × 99 =
  13. 13.37 × 98 =
  14. 14.5 × 19 =
  15. 15.7 × 19 =
  16. 16.27 × 98 =
  17. 17.9 × 9 =
  18. 18.15 × 19 =
  19. 19.28 × 99 =
  20. 20.7 × 9 =
  21. 21.4 × 19 =
  22. 22.15 × 19 =
  23. 23.30 × 98 =
  24. 24.4 × 29 =
  25. 25.4 × 9 =
  26. 26.31 × 98 =
  27. 27.10 × 29 =
  28. 28.5 × 29 =
  29. 29.5 × 9 =
  30. 30.12 × 29 =
  31. 31.12 × 9 =
  32. 32.4 × 49 =
  33. 33.13 × 19 =
  34. 34.7 × 29 =
  35. 35.12 × 29 =
  36. 36.6 × 19 =
  37. 37.12 × 19 =
  38. 38.7 × 9 =
  39. 39.11 × 99 =
  40. 40.4 × 9 =

Answer key

  1. 285
  2. 95
  3. 2156
  4. 81
  5. 693
  6. 2475
  7. 3960
  8. 1764
  9. 133
  10. 76
  11. 1881
  12. 2574
  13. 3626
  14. 95
  15. 133
  16. 2646
  17. 81
  18. 285
  19. 2772
  20. 63
  21. 76
  22. 285
  23. 2940
  24. 116
  25. 36
  26. 3038
  27. 290
  28. 145
  29. 45
  30. 348
  31. 108
  32. 196
  33. 247
  34. 203
  35. 348
  36. 114
  37. 228
  38. 63
  39. 1089
  40. 36

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