计算.(能简算的要简算)2.5*12.5*32 8/9*[3/4-(7/16-1/4)] 3/8*(3/5/3/4-2/
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计算.(能简算的要简算)2.5*12.5*32 8/9*[3/4-(7/16-1/4)] 3/8*(3/5/3/4-2/3)
![计算.(能简算的要简算)2.5*12.5*32 8/9*[3/4-(7/16-1/4)] 3/8*(3/5/3/4-2/](/uploads/image/z/16329790-46-0.jpg?t=%E8%AE%A1%E7%AE%97.%EF%BC%88%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%892.5%2A12.5%2A32+8%2F9%2A%5B3%2F4-%287%2F16-1%2F4%29%5D+3%2F8%2A%283%2F5%2F3%2F4-2%2F)
2.5*12.5*32
=2.5*4*12.5*8
=10*100
=1000
8/9*[3/4-(7/16-1/4)]
=8/9*[3/4+1/4-7/16]
=8/9*9/16
=1/2
3/8*(3/5/3/4-2/3)
=3/8*(3/5÷3/4-2/3)
=3/8*[4/5-2/3]
=3/8*2/15
=1/20
=2.5*4*12.5*8
=10*100
=1000
8/9*[3/4-(7/16-1/4)]
=8/9*[3/4+1/4-7/16]
=8/9*9/16
=1/2
3/8*(3/5/3/4-2/3)
=3/8*(3/5÷3/4-2/3)
=3/8*[4/5-2/3]
=3/8*2/15
=1/20
四、计算(能简算的要用简便方法计算)(12分) 1、1÷2.5+2.5*0.4+1 2、8/9 *[3/4 -(7/16
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