小数加减法计算和混合运算练习11.口算0.4×0.3=0.5×6=12.5×0.80.1×100=1÷10=2.3+6=2.5×4=5.4-4=2.笔算。10.5-8.79=38-2.65=29.5+3.62=8.55+5.8=4.8×171.88×2527.6×0.15=250×2.4=3、递等式计算，能简便的要简便运算。9.29-2.27+1.86-4.26+1.7915.89-（5.89+6.98）75.6-10.8-9.22.5×7.1×416.12×99+16.125.2×0.9+0.9×4.8101×4.825×15.7+15.7×2464－2.64×0.50.25×39+0.250.125×72小数加减法计算和混合运算练习21.口算0.3×0.4=0.6×0.7=0.25×4=0.5×0.2=0.87×100=0.8×1.25=0.9+0.050.6×0.1=2.用竖式计算。3.07×6.5=4.6×3.5=0.027×1.8=3.07×6.5=4.6×3.5=0.027×1.8=0.78×4.5=3.36×3.67=3、递等式计算，能简便的要简便运算。2.5×13+0.92.6+1.4×7100-0.34-0.6664.4-11.2-38.80.89×5.8+0.89×4.212.5×8.2×80.23×0.14+0.23×5.20.4×0.16×2.51.63+19.9+0.375.6×101（2.5+0.25）×4