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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 320 · 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. 1.34 × 98 =
  2. 2.9 × 99 =
  3. 3.11 × 49 =
  4. 4.7 × 9 =
  5. 5.16 × 98 =
  6. 6.35 × 98 =
  7. 7.7 × 99 =
  8. 8.6 × 29 =
  9. 9.10 × 9 =
  10. 10.15 × 49 =
  11. 11.5 × 29 =
  12. 12.11 × 29 =
  13. 13.6 × 9 =
  14. 14.6 × 49 =
  15. 15.10 × 9 =
  16. 16.37 × 98 =
  17. 17.9 × 19 =
  18. 18.15 × 98 =
  19. 19.10 × 19 =
  20. 20.8 × 19 =
  21. 21.9 × 49 =
  22. 22.6 × 98 =
  23. 23.7 × 9 =
  24. 24.5 × 9 =
  25. 25.8 × 49 =
  26. 26.12 × 9 =
  27. 27.8 × 9 =
  28. 28.10 × 19 =
  29. 29.36 × 98 =
  30. 30.12 × 49 =
  31. 31.8 × 9 =
  32. 32.21 × 99 =
  33. 33.12 × 49 =
  34. 34.6 × 29 =
  35. 35.12 × 98 =
  36. 36.4 × 19 =
  37. 37.4 × 19 =
  38. 38.9 × 49 =
  39. 39.5 × 49 =
  40. 40.12 × 9 =

Answer key

  1. 3332
  2. 891
  3. 539
  4. 63
  5. 1568
  6. 3430
  7. 693
  8. 174
  9. 90
  10. 735
  11. 145
  12. 319
  13. 54
  14. 294
  15. 90
  16. 3626
  17. 171
  18. 1470
  19. 190
  20. 152
  21. 441
  22. 588
  23. 63
  24. 45
  25. 392
  26. 108
  27. 72
  28. 190
  29. 3528
  30. 588
  31. 72
  32. 2079
  33. 588
  34. 174
  35. 1176
  36. 76
  37. 76
  38. 441
  39. 245
  40. 108

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