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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 425 · 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. 1.4 × 99 =
  2. 2.11 × 19 =
  3. 3.16 × 98 =
  4. 4.35 × 99 =
  5. 5.7 × 9 =
  6. 6.8 × 19 =
  7. 7.4 × 9 =
  8. 8.11 × 99 =
  9. 9.14 × 9 =
  10. 10.26 × 98 =
  11. 11.11 × 19 =
  12. 12.32 × 98 =
  13. 13.4 × 19 =
  14. 14.5 × 9 =
  15. 15.32 × 98 =
  16. 16.14 × 9 =
  17. 17.5 × 98 =
  18. 18.7 × 49 =
  19. 19.26 × 98 =
  20. 20.7 × 49 =
  21. 21.8 × 19 =
  22. 22.9 × 29 =
  23. 23.7 × 99 =
  24. 24.6 × 49 =
  25. 25.14 × 29 =
  26. 26.10 × 9 =
  27. 27.11 × 98 =
  28. 28.13 × 19 =
  29. 29.7 × 99 =
  30. 30.15 × 98 =
  31. 31.3 × 49 =
  32. 32.6 × 99 =
  33. 33.8 × 19 =
  34. 34.6 × 9 =
  35. 35.7 × 29 =
  36. 36.9 × 9 =
  37. 37.12 × 9 =
  38. 38.3 × 19 =
  39. 39.7 × 49 =
  40. 40.5 × 9 =

Answer key

  1. 396
  2. 209
  3. 1568
  4. 3465
  5. 63
  6. 152
  7. 36
  8. 1089
  9. 126
  10. 2548
  11. 209
  12. 3136
  13. 76
  14. 45
  15. 3136
  16. 126
  17. 490
  18. 343
  19. 2548
  20. 343
  21. 152
  22. 261
  23. 693
  24. 294
  25. 406
  26. 90
  27. 1078
  28. 247
  29. 693
  30. 1470
  31. 147
  32. 594
  33. 152
  34. 54
  35. 203
  36. 81
  37. 108
  38. 57
  39. 343
  40. 45

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