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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 378 · 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. 1.28 × 99 =
  2. 2.6 × 9 =
  3. 3.7 × 9 =
  4. 4.40 × 99 =
  5. 5.8 × 49 =
  6. 6.4 × 19 =
  7. 7.5 × 98 =
  8. 8.6 × 99 =
  9. 9.13 × 19 =
  10. 10.8 × 29 =
  11. 11.6 × 49 =
  12. 12.9 × 99 =
  13. 13.27 × 99 =
  14. 14.12 × 19 =
  15. 15.5 × 19 =
  16. 16.12 × 99 =
  17. 17.12 × 19 =
  18. 18.20 × 99 =
  19. 19.15 × 19 =
  20. 20.5 × 9 =
  21. 21.20 × 98 =
  22. 22.11 × 99 =
  23. 23.5 × 49 =
  24. 24.7 × 29 =
  25. 25.12 × 9 =
  26. 26.6 × 99 =
  27. 27.37 × 98 =
  28. 28.21 × 98 =
  29. 29.14 × 9 =
  30. 30.14 × 98 =
  31. 31.3 × 98 =
  32. 32.10 × 49 =
  33. 33.15 × 9 =
  34. 34.4 × 49 =
  35. 35.10 × 29 =
  36. 36.3 × 49 =
  37. 37.7 × 29 =
  38. 38.4 × 29 =
  39. 39.8 × 99 =
  40. 40.3 × 29 =

Answer key

  1. 2772
  2. 54
  3. 63
  4. 3960
  5. 392
  6. 76
  7. 490
  8. 594
  9. 247
  10. 232
  11. 294
  12. 891
  13. 2673
  14. 228
  15. 95
  16. 1188
  17. 228
  18. 1980
  19. 285
  20. 45
  21. 1960
  22. 1089
  23. 245
  24. 203
  25. 108
  26. 594
  27. 3626
  28. 2058
  29. 126
  30. 1372
  31. 294
  32. 490
  33. 135
  34. 196
  35. 290
  36. 147
  37. 203
  38. 116
  39. 792
  40. 87

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