计算.208-900÷45 25.6-8.44-1.56 0.8×40×25×1.25 [1-( 1 2 - 1 4 )]
计算.208-900÷4525.6-8.44-1.560.8×40×25×1.25[1-(12-14)]×23(1115-95÷3)÷715....
计算.208-900÷45 25.6-8.44-1.56 0.8×40×25×1.25 [1-( 1 2 - 1 4 )]× 2 3 ( 11 15 - 9 5 ÷3)÷ 7 15 .
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(1)208-900÷45, =208-20, =188; (2)25.6-8.44-1.56, =25.6-(8.44+1.56), =25.6-10, =15.6; (3)0.8×40×25×1.25, =(0.8×1.25)×(40×25), =1×1000, =1000; (4)[1-(
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