计算。2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
（1）12.5×0.68÷8.52S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
算式：提示1t2o6j)[([;w,V)N2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
=)x1\*W*l.H1W4A/u+P1o.M*U'q-a2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
（2）33.6-5.6×4.12S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
算式：提示-k'f,G0s;b)f1z*S7[9r/}*H2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
=*H:@)n3h8W4O-y2y6Z2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
（3）15.6+9.744÷2.42S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
算式：提示5\.{.k8Z,H3Y)K9k2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
=8L(B.v3g3X)r'F:r2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
（4）4.5+2.881÷0.432S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
算式：提示.y;j(X'h2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_
=8Y2S3P)X+X,O4D2S1E)b7x/x'u1x-s;{/|(F-|6S9P(O*j5_