问题 解答题

用简便方法计算

①7350÷25

②54×101

③227+364+146+173

④5604-(723+1604)

答案

①7350÷25,

=(7350×4)÷(25×4),

=29400÷100,

=294;

②54×101,

=54×100+54,

=5454;

③227+364+146+173,

=(227+173)+(364+146),

=400+510,

=910;

④5604-(723+1604),

=5604-1604-723,

=3277.

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