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Estimating Sums

Estimating Sums. 5 7 + 3 1. Actual answer. 5 7 5 7 + 3 1 + 3 1 8 8. Estimated answer. 5 7 6 0 + 3 1 +3 0 9 0. Your Turn! . Actual answer. 6 8 + 2 4. Estimated answer. 6 8 + 2 4 +_____ 9 2. Estimated answer. 6 8 7 0

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Estimating Sums

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  1. Estimating Sums

  2. 5 7 + 3 1

  3. Actual answer 5 7 5 7 + 3 1+ 3 1 8 8

  4. Estimated answer 5 7 6 0 + 3 1 +3 0 9 0

  5. Your Turn! 

  6. Actual answer 6 8 + 2 4

  7. Estimated answer 6 8 + 2 4+_____ 9 2

  8. Estimated answer 6 8 7 0 + 2 4+ 2 0_ 9 2 9 0

  9. Actual answer 367 + 456

  10. Estimated answer 367 + 456+_____ 823

  11. Estimated answer 367 400 + 456+_500 823900

  12. Actual answer 897 + 412

  13. Estimated answer 897 + 412+_____ 1309

  14. Estimated answer 897 900 + 412+_ 400 1309 1300

  15. Actual answer 635 + 342

  16. Estimated answer 635 + 342+_____ 977

  17. Estimated answer 635 600 + 342+_300 977900

  18. Actual answer 3,269 + 1,629

  19. Estimated answer 3,269 +1,629 + _______ 4,898

  20. Estimated answer 3,269 3,000 +1,629+2,000 4,898 5,000

  21. Actual answer 4,092 + 2,808

  22. Estimated answer 4,092 +2,808+_____ 6,900

  23. Estimated answer 4,092 4,000 +2,808+ 3,000 6,900 7,000

  24. Actual Answers!

  25. 5 6+ 3 9

  26. 5 6+ 3 9 9 5

  27. 2 4 + 6 9

  28. 2 4 + 6 9 9 3

  29. 4 5 6+2 4 5

  30. 4 5 6+ 2 4 5 7 0 1

  31. 1 9 8 + 7 0 9

  32. 1 9 8 + 7 0 9 9 0 7

  33. 5, 2 9 0 + 3, 5 7 9

  34. 5, 2 9 0 + 3, 5 7 9 8, 8 6 9

  35. 3, 8 1 5 + 6, 2 9 9

  36. 3, 8 1 5 + 6, 2 9 9 1 0, 1 1 4

  37. 7, 4 3 8 + 4, 2 8 9

  38. 7, 4 3 8 + 4, 2 8 9 1 1, 7 2 7

  39. Estimated Answers!

  40. 5 6+ 3 9

  41. 6 0+ 4 01 0 0

  42. 2 4 + 6 9

  43. 2 0 + 7 0 9 0

  44. 4 5 6+ 2 4 5

  45. 5 0 0+ 2 0 0 7 0 0

  46. 1 9 8 + 7 0 9

  47. 2 0 0 + 7 0 0 9 0 0

  48. 5, 2 9 0 + 3, 5 7 9

  49. 5, 0 0 0 + 4, 0 0 0 9, 0 0 0

  50. 3, 8 1 5 + 6, 2 9 9

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