7.2*4.6+46*0.28怎么简算
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![7.2*4.6+46*0.28怎么简算](/uploads/image/z/133087-31-7.jpg?t=7.2%2A4.6%2B46%2A0.28%E6%80%8E%E4%B9%88%E7%AE%80%E7%AE%97)
7.2*4.6+46*0.28怎么简算
7.2*4.6+46*0.28怎么简算
7.2*4.6+46*0.28怎么简算
=7.2*4.6+4.6*2.8
=4.6*(7.2+2.8)
=4.6*10
=46
7.2*4.6+46*0.28
=7.2*4.6+4.6*10*0.28
=7.2*4.6+2.8*4.6
=(7.2+2.8)*4.6
=10*4.6
=46
7.2*4.6+46*0.28怎么简算
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7.2*4.6+46*0.28
=7.2*4.6+4.6*2.8
=(7.2+2.8)*4.6
=10*4.6
=46
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注意到数字之间有特殊的联系就有思路了
72 28 能看出来不?
0.72*46+46*0.28=46
7.2*4.6+46*0.28
=7.2*4.6+4.6*10*0.28
=7.2*4.6+2.8*4.6
=(7.2+2.8)*4.6
=10*4.6
=46
7.2*4.6+46*0.28
=7.2*4.6+4.6*10*0.28
=(7.2+2.8)*4.6
=10*4.6
=46
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