题目内容
【题目】脱式计算。
1250+(5600-75×60) 64+992÷(426-394)
966÷(27+19)×45 (1254-78×12)÷53
【答案】2350 95 945 6
【解析】
1250+(5600-75×60)
=1250+(5600-4500)
=1250+1100
=2350
64+992÷(426-394)
=64+992÷32
=64+31
=95
966÷(27+19)×45
=966÷46×45
=21×45
=945
(1254-78×12)÷53
=(1254-936)÷53
=318÷53
=6
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