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(3.75%3.75x0.4)1.3+0.2简便计算

3.75-1.75×0.24=3.75-1.75×0.4×0.6=3.75-0.7×0.6=3.75-0.42=3.33

见图

9.875-(3又8分之7-75%)+3又4分之1 =9.875-3又8分之7+75%+3又4分之1 =6+4 =10

3.75-[-7/8+5又1/2]-0.12 =3.75-4又5/8-0.12 =3.75-4.745 =0.995

0.6-1/4-(-3.75)+2/5 =0.6+0.4+(3.75-0.25) =1+3.5 =4.5 (-2/5)+(-3又4/7)-1.6-(-11/7) =-(0.4+1.6)-(3又4/7-1又4/7) =-2-2 = -4

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