问题 解答题
递等式计算:
(15+25)×8

(49+21)×(84÷12)

205-135÷9.
答案

(1)(15+25)×8,

=40×8,

=320;

(2)(49+21)×(84÷12),

=70×7,

=490;

(3)205-135÷9,

=205-15,

=190.

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