12.5*(81*1.7+8.1*8.3) 要巧算!是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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12.5*(81*1.7+8.1*8.3)要巧算!是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!
12.5*(81*1.7+8.1*8.3) 要巧算!是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
12.5*(81*1.7+8.1*8.3) 要巧算!
是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)
大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
12.5*(81*1.7+8.1*8.3) 要巧算!是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
=12.5x8.1x(17+8.3)
=12.5x(8+0.1)x25.3
=(100+1.25)x25.3
=2530+31.625
=2561.625
布吉岛
切,简单哦娃纸
12.5*[8.1(0.17+8.3)]
后面的自己算吧,够简便了
12.5*(8.1*1.7+8.1*8.3)
=12.5*8.1*(1.7+8.3)
=12.5*8.1*10
=12.5*81
=12.5*80+12.5
=1000+12.5
=1012.5
12.5×(81×1.7+8.1×8.3)
=12.5×(8.1×17+8.1×8.3)
=12.5×8.1×25.3
=12.5×(8+0.1)×25.3
=(100+1.25)×25.3
=2530×(1.25×(8+8+8+0.8+0.5)
=2561.625
12.5*(81*1.7+8.1*8.3) 要巧算!
12.5*(81*1.7+8.1*8.3) 要巧算!是12.5×(81×1.7+8.1×8.3)不是12.5×(8.1×1.7+8.1×8.3)大家注意啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
0.58*1.7+1.7*1.42+8.3*2
0.25×32×1.7×12.5
1.7X+8.3X=0.
x+1.7x=8.1怎么作?
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