Correct: 4.8 + 3.4 = 8.2, 5.5 + 7.9 + 2.0 =15.4, 3.46 + 2. 55 + 4= 10.01, (-3) + (-3) + (-9) = -18, 1.1 + 1.11 + 1.111= 3.321, (-4. 5) + (-4.5) = -9, 5.68 + 4. 3 + 4 = 13.98, .03 + .125 = 0.155, 23.55 + 34 = 57.55, 7.44 + 35 = 42.44, Incorrect: 1. 1 + 1. 2 + 1. 33 = 1. 36, (-5.50) + (-5.50) = -115, 3.4 + .34 =.68, 2.4 + .45 + .12 = .81, 4.5 + 2.66 = 6.71,

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