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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 53 · 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. 1.37 × 98 =
  2. 2.10 × 19 =
  3. 3.7 × 19 =
  4. 4.7 × 19 =
  5. 5.6 × 49 =
  6. 6.12 × 19 =
  7. 7.6 × 99 =
  8. 8.10 × 98 =
  9. 9.9 × 49 =
  10. 10.9 × 29 =
  11. 11.3 × 29 =
  12. 12.11 × 9 =
  13. 13.15 × 9 =
  14. 14.6 × 49 =
  15. 15.14 × 98 =
  16. 16.11 × 19 =
  17. 17.4 × 29 =
  18. 18.4 × 29 =
  19. 19.11 × 99 =
  20. 20.7 × 19 =
  21. 21.12 × 19 =
  22. 22.9 × 99 =
  23. 23.7 × 49 =
  24. 24.11 × 29 =
  25. 25.9 × 29 =
  26. 26.5 × 29 =
  27. 27.7 × 49 =
  28. 28.4 × 19 =
  29. 29.5 × 19 =
  30. 30.8 × 9 =
  31. 31.10 × 29 =
  32. 32.30 × 98 =
  33. 33.14 × 29 =
  34. 34.34 × 99 =
  35. 35.5 × 49 =
  36. 36.6 × 49 =
  37. 37.8 × 9 =
  38. 38.3 × 19 =
  39. 39.3 × 49 =
  40. 40.3 × 49 =

Answer key

  1. 3626
  2. 190
  3. 133
  4. 133
  5. 294
  6. 228
  7. 594
  8. 980
  9. 441
  10. 261
  11. 87
  12. 99
  13. 135
  14. 294
  15. 1372
  16. 209
  17. 116
  18. 116
  19. 1089
  20. 133
  21. 228
  22. 891
  23. 343
  24. 319
  25. 261
  26. 145
  27. 343
  28. 76
  29. 95
  30. 72
  31. 290
  32. 2940
  33. 406
  34. 3366
  35. 245
  36. 294
  37. 72
  38. 57
  39. 147
  40. 147

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