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16 May, 23:06

Estimate then add to find the combined length of the four highways shown in the table. is your answer resonable? Explain. Interstate 1-90 length 3,102, 1-10 length 2,460, 1-70 lenght 2,153, 1-80 length 2,899

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  1. 16 May, 23:33
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    To estimate, round 3102 to 3100

    round 1-10 to 2500

    1-70 to 2100

    1-80 to 2900

    2900+2100+2500+3100=10600mi

    Yes it is reasonable because you add and subtract numbers when estimating, however it is not exact
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