问题 解答题

计算.

105÷7+18

520÷(45÷9)

512-112÷4

(603-246)÷7.

答案

(1)105÷7+18,

=15+18,

=33;

(2)520÷(45÷9)

=520÷5,

=104;

(3)512-112÷4,

=512-28,

=484;

(4)(603-246)÷7,

=357÷7,

=51.

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