脱式计算 (1)(0.69+0.35)×0.12 (2)〔32-(1.95-1.95)〕÷1.6 (3)15.52-1.6×5-5.7 (

脱式计算 (1)(0.69+0.35)×0.12 (2)〔32-(1.95-1.95)〕÷1.6 (3)15.52-1.6×5-5.7 (4)4.8×12-4.8×2 (5)0.6×2.5×0.5×4 (6)3.5×2.34+3.5×7.6.

(1)(0.69+0.35)×0.12,
=1.04×0.12,
=0.1248;

(2)[32-(1.95-1.95)]÷1.6,
=[32-0]÷1.6,
=32÷1.6,
=20;

(3)15.52-1.6×5-5.7,
=15.52-8-5.7,
=7.52-5.7,
=1.82;

(4)4.8×12-4.8×2,
=4.8×(12-2),
=4.8×10,
=48;

(5)0.6×2.5×0.5×4,
=(0.6×0.5)×(2.5×4),
=0.3×10,
=3;

(6)3.5×2.34+3.5×7.6,
=3.5×(2.34+7.6),
=3.5×9.94,
=3.5×(10-0.06),
=3.5×10-3.5×0.06,
=35-0.21,
=34.79.

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