问题 解答题

脱式计算下面各题.

(1)520+(3270-332)÷26

(2)1580-(720+780÷13)

答案

(1)520+(3270-332)÷26,

=520+2938÷26,

=520+113,

=633;

(2)1580-(720+780÷13),

=1580-(720+60),

=1580-780,

=800.

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