The approximate value of $1088.88 + 1800.08 + 1880.80$ equals

Adding the units and decimal parts of the numbers first, we combine 0.88, 0.08, and 0.80 to get 1.76. Next, we add the whole number parts, which are 1088, 1800, and 1880, yielding 4768. Adding the decimal sum to the whole number sum gives 4768 + 1.76, which equals 4769.76. Rounding this to the nearest ten gives the result of 4770.

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