灵活计算，能用简便方法的要简算．
10.1×85                 125×9.3×0.08              43.72×7.9+2.1×43.27
93÷0.25÷4              2.3+3.91÷（22﹣19.7）      7.92×6﹣18.45÷3
6.78+6.78×99            18﹣（1.4+1.25×2.4）       0.8×[13﹣（3.12+5.28）]．