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Estimating Sums

Estimating Sums

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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 - PowerPoint PPT Presentation

Text of 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+ 2 4 + 2 0_ 9 2 9 0

  • Actual answer367 + 456

  • Estimated answer 367 + 456 +_____ 823

  • Estimated answer 367 400+ 456 +_500 823 900

  • Actual answer 897+ 412

  • Estimated answer 897 + 412 +_____ 1309

  • Estimated answer 897 900 + 412 +_ 400 1309 1300

  • Actual answer 635+ 342

  • Estimated answer 635 + 342 +_____ 977

  • Estimated answer 635 600 + 342 +_300 977 900

  • Actual answer 3,269 + 1,629

  • Estimated answer 3,269 +1,629 + _______ 4,898

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

  • Actual answer 4,092 + 2,808

  • Estimated answer 4,092 +2,808 +_____ 6,900

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

  • Actual Answers!

  • 5 6+ 3 9

  • 5 6+ 3 9 9 5

  • 2 4 + 6 9

  • 2 4 + 6 9 9 3

  • 4 5 6 +2 4 5

  • 4 5 6 + 2 4 5 7 0 1

  • 1 9 8 + 7 0 9

  • 1 9 8 + 7 0 9 9 0 7

  • 5, 2 9 0 + 3, 5 7 9

  • 5, 2 9 0 + 3, 5 7 9 8, 8 6 9

  • 3, 8 1 5 + 6, 2 9 9

  • 3, 8 1 5 + 6, 2 9 9 1 0, 1 1 4

  • 7, 4 3 8 + 4, 2 8 9

  • 7, 4 3 8 + 4, 2 8 9 1 1, 7 2 7

  • Estimated Answers!

  • 5 6+ 3 9

  • 6 0+ 4 01 0 0

  • 2 4 + 6 9

  • 2 0 + 7 0 9 0

  • 4 5 6 + 2 4 5

  • 5 0 0 + 2 0 0 7 0 0

  • 1 9 8 + 7 0 9

  • 2 0 0 + 7 0 0 9 0 0

  • 5, 2 9 0 + 3, 5 7 9

  • 5, 0 0 0 + 4, 0 0 0 9, 0 0 0

  • 3, 8 1 5 + 6, 2 9 9

  • 4, 0 0 0 + 6, 0 0 0 1 0, 0 0 0

  • 7, 6 3 8 + 4, 2 8 9

  • 8, 0 0 0 + 4, 0 0 0 1 2, 0 0 0

  • Well, its about time you got the hang of it! Now, lets make some As!!!