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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 325 · 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. 1.3 × 9 =
  2. 2.5 × 98 =
  3. 3.13 × 9 =
  4. 4.9 × 49 =
  5. 5.6 × 49 =
  6. 6.3 × 9 =
  7. 7.4 × 9 =
  8. 8.36 × 98 =
  9. 9.8 × 19 =
  10. 10.33 × 98 =
  11. 11.7 × 9 =
  12. 12.8 × 19 =
  13. 13.10 × 99 =
  14. 14.33 × 99 =
  15. 15.13 × 19 =
  16. 16.5 × 9 =
  17. 17.11 × 9 =
  18. 18.7 × 9 =
  19. 19.3 × 9 =
  20. 20.4 × 29 =
  21. 21.6 × 19 =
  22. 22.12 × 19 =
  23. 23.26 × 98 =
  24. 24.35 × 98 =
  25. 25.14 × 49 =
  26. 26.14 × 29 =
  27. 27.9 × 49 =
  28. 28.22 × 99 =
  29. 29.3 × 19 =
  30. 30.13 × 19 =
  31. 31.9 × 99 =
  32. 32.4 × 98 =
  33. 33.14 × 19 =
  34. 34.12 × 19 =
  35. 35.13 × 49 =
  36. 36.9 × 9 =
  37. 37.32 × 99 =
  38. 38.7 × 9 =
  39. 39.3 × 9 =
  40. 40.6 × 29 =

Answer key

  1. 27
  2. 490
  3. 117
  4. 441
  5. 294
  6. 27
  7. 36
  8. 3528
  9. 152
  10. 3234
  11. 63
  12. 152
  13. 990
  14. 3267
  15. 247
  16. 45
  17. 99
  18. 63
  19. 27
  20. 116
  21. 114
  22. 228
  23. 2548
  24. 3430
  25. 686
  26. 406
  27. 441
  28. 2178
  29. 57
  30. 247
  31. 891
  32. 392
  33. 266
  34. 228
  35. 637
  36. 81
  37. 3168
  38. 63
  39. 27
  40. 174

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