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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 350 · 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. 1.10 × 9 =
  2. 2.33 × 98 =
  3. 3.3 × 29 =
  4. 4.10 × 29 =
  5. 5.6 × 49 =
  6. 6.14 × 29 =
  7. 7.36 × 98 =
  8. 8.15 × 49 =
  9. 9.3 × 29 =
  10. 10.7 × 49 =
  11. 11.30 × 98 =
  12. 12.29 × 98 =
  13. 13.3 × 29 =
  14. 14.12 × 29 =
  15. 15.17 × 98 =
  16. 16.11 × 99 =
  17. 17.7 × 9 =
  18. 18.11 × 29 =
  19. 19.12 × 9 =
  20. 20.9 × 98 =
  21. 21.14 × 29 =
  22. 22.10 × 49 =
  23. 23.8 × 19 =
  24. 24.15 × 9 =
  25. 25.13 × 49 =
  26. 26.3 × 9 =
  27. 27.12 × 49 =
  28. 28.12 × 99 =
  29. 29.14 × 49 =
  30. 30.4 × 9 =
  31. 31.15 × 29 =
  32. 32.10 × 29 =
  33. 33.14 × 29 =
  34. 34.6 × 19 =
  35. 35.3 × 98 =
  36. 36.13 × 49 =
  37. 37.4 × 49 =
  38. 38.7 × 9 =
  39. 39.8 × 29 =
  40. 40.14 × 29 =

Answer key

  1. 90
  2. 3234
  3. 87
  4. 290
  5. 294
  6. 406
  7. 3528
  8. 735
  9. 87
  10. 343
  11. 2940
  12. 2842
  13. 87
  14. 348
  15. 1666
  16. 1089
  17. 63
  18. 319
  19. 108
  20. 882
  21. 406
  22. 490
  23. 152
  24. 135
  25. 637
  26. 27
  27. 588
  28. 1188
  29. 686
  30. 36
  31. 435
  32. 290
  33. 406
  34. 114
  35. 294
  36. 637
  37. 196
  38. 63
  39. 232
  40. 406

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