问题 解答题
脱式计算
225-100÷423×(34+66)469÷7×28.
答案

(1)225-100÷4,

=225-25,

=200;

(2)23×(34+66),

=23×100,

=2300;

(3)469÷7×28,

=67×28,

=1876.

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