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Explain how you know that the sum of 12.6,3.1, and 5.4 is greater than 20

Explain how you know that the sum of 12.6,3.1, and 5.4 is greater than 20
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Explain how you know that the sum of 12.6,3.1, and 5.4 is greater than 20

User Sudonym
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by just looking at ur whole numbers...12 + 3 + 5 = 20...and thats not even counting ur decimals..so by adding ur decimals, u know that it will be over 20.
User Valor
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