0.89×0.48+0.89×0.52 0.25×13.7×0.4 4.2×101
3.6×99 2.5×32×1.25 0.125×88
56.5×99+56.5 （1.25﹣0.125）×8 45÷0.09÷0.5
17.8÷（1.78×4）
0.89×0.48+0.89×0.52 0.25×13.7×0.4 4.2×101
3.6×99 2.5×32×1.25 0.125×88
56.5×99+56.5 （1.25﹣0.125）×8 45÷0.09÷0.5
17.8÷（1.78×4）
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