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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 904 · 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. 1.12 × 98 =
  2. 2.15 × 29 =
  3. 3.15 × 49 =
  4. 4.8 × 98 =
  5. 5.37 × 98 =
  6. 6.6 × 99 =
  7. 7.30 × 98 =
  8. 8.31 × 99 =
  9. 9.36 × 98 =
  10. 10.13 × 29 =
  11. 11.14 × 49 =
  12. 12.4 × 49 =
  13. 13.11 × 98 =
  14. 14.15 × 19 =
  15. 15.30 × 99 =
  16. 16.4 × 98 =
  17. 17.10 × 49 =
  18. 18.14 × 19 =
  19. 19.4 × 99 =
  20. 20.10 × 49 =
  21. 21.3 × 9 =
  22. 22.27 × 98 =
  23. 23.3 × 19 =
  24. 24.11 × 29 =
  25. 25.17 × 98 =
  26. 26.28 × 98 =
  27. 27.3 × 19 =
  28. 28.10 × 99 =
  29. 29.3 × 19 =
  30. 30.4 × 99 =
  31. 31.5 × 98 =
  32. 32.14 × 99 =
  33. 33.4 × 49 =
  34. 34.11 × 98 =
  35. 35.40 × 99 =
  36. 36.28 × 98 =
  37. 37.7 × 19 =
  38. 38.9 × 29 =
  39. 39.14 × 29 =
  40. 40.30 × 99 =

Answer key

  1. 1176
  2. 435
  3. 735
  4. 784
  5. 3626
  6. 594
  7. 2940
  8. 3069
  9. 3528
  10. 377
  11. 686
  12. 196
  13. 1078
  14. 285
  15. 2970
  16. 392
  17. 490
  18. 266
  19. 396
  20. 490
  21. 27
  22. 2646
  23. 57
  24. 319
  25. 1666
  26. 2744
  27. 57
  28. 990
  29. 57
  30. 396
  31. 490
  32. 1386
  33. 196
  34. 1078
  35. 3960
  36. 2744
  37. 133
  38. 261
  39. 406
  40. 2970

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