問數(shù)學(xué)題~

2022-08-05 16:01

2022-08-05 18:10
1.25╳2/5 =10米,10╳2/5 =4米,4╳2/5 =1.6米,1.6╳2/5 =0.64米。
2.144÷(12÷6/7 )
3.94-10÷(1-2/5)
771/3×2/5+2
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