问题 解答题 90×70=360÷90=6×600=900÷90=0÷82=780÷30=560×0=25×40=630÷70= 答案 90×70=6300,360÷90=4,6×600=3600,900÷90=10,0÷82=0,780÷30=26,560×0=0,25×40=1000,630÷70=9.