题目内容

托式计算.
1250+(5600-75×60)64+992÷(426-394)966÷(27+19)×45(1254-78×12)÷53.
(1)1250+(5600-75×60),
=1250+(5600-4500),
=1250+1100,
=2350;

(2)64+992÷(426-394),
=64+992÷32,
=64+31,
=95;

(3)966÷(27+19)×45,
=966÷46×45,
=21×45,
=945;

(4)(1254-78×12)÷53,
=(1254-936)÷53,
=318÷53,
=6.
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