递等式计算,能简算的要简算:
9.7﹣22.78÷3.4 1.05÷0.7+18.9 0.4×5÷0.4×5
21÷0.25÷0.4 0.125×32×0.25 82.2×9.9.
递等式计算,能简算的要简算:
9.7﹣22.78÷3.4 1.05÷0.7+18.9 0.4×5÷0.4×5
21÷0.25÷0.4 0.125×32×0.25 82.2×9.9.