10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算

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10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算

10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算
10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算

10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算
10.63-2.53-3.47+8.54
=10.63-(2.53+3.47)+8.54
=10.63-6+8.54
=4.63+8.54
=13.17
12.5乘6.4 乘0.25
=12.5*0.8*8*0.25
=10*2
=20

10.63-2.53-3.47+8.54
=10.63-(2.53+3.47)+8.54
=10.63-6+8.54
=4.63+8.54
=13.17
12.5乘6.4 乘0.25
=12.5×0.8×2×4×0.25
=10×2×(4×0.25)
=20×1
=20
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