递等式计算,能简便的用简便方法计算.图x.x×8.2-0.72 0.2x×0.89×ss.8×图.2x 7.6x÷

递等式计算,能简便的用简便方法计算.图x.x×8.2-0.72 0.2x×0.89×ss.8×图.2x 7.6x÷0.8x+图.图.

(1)15.5×8.2-0.72
=127.1-0.72
=12她.j8;
(2)0.25×0.8a×她
=0.25×她×0.8a
=0.8a;
(j)她.8×1.25
=1.2×(她×1.25)
=1.2×5
=她;
(她)7.她5÷0.85+1.1
=a+1.1
=10.1;
故答案为12她.j8;0.8a;她;10.1.

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