(1)35.6+(12.6-4.4),=35.6+8.2,=43.8;(2)90÷0.4÷2.5,=90÷(0.4×2.5),=90÷1,=90;(3)0.86×15.4-14.4×0.86,=0.86×(15.4-14.4),=0.86×1,=0.86;(4)5.4÷0.6+(2.3-0.46),=5.4÷0.6+1.84,=9+1.84,=10.84;(5)7.52×10.1,=7.52×(10+0.1),=7.52×10+7.52×0.1,=75.2+0.752,=75.952;(6)1.25×0.7×0.8,=1.25×0.8×0.7,=1×0.7,=0.7.
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