Final answer:
To estimate the value of 458 + 13.6, round each number to the nearest 10 and add them together. The estimated value is 470.
Step-by-step explanation:
To estimate the value of 458 + 13.6 by rounding each number to the nearest 10, we can round 458 to 460 and 13.6 to 10. Adding them together, we get 460 + 10 = 470. Therefore, the estimated value of 458 + 13.6 is 470.
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