直接写出得数．
12.4+2.1=0.08×0.5=0.14÷0.02=2.5+0.2×2=9.5×100=1.25×8=1÷4=0.25×0.9×4=3.5-1.5=1.2÷0.4=3.6×0.5=8×0.9+8×2.1=6.3÷0.09=2.9×0.3=0.95÷5=7.8+2.2-1.5=1.6×0.25=0.1÷0.5=3.5×2×0.1=2.1÷0.2÷3.5=
网友回答
解：12.4+2.1=14.50.08×0.5=0.040.14÷0.02=72.5+0.2×2=2.99.5×100=9501.25×8=101÷4=0.250.25×0.9×4=0.93.5-1.5=21.2÷0.4=33.6×0.5=1.88×0.9+8×2.1=246.3÷0.09=702.9×0.3=0.870.95÷5=0.197.8+2.2-1.5=8.51.6×0.25=0.40.1÷0.5=0.23.5×2×0.1=0.72.1÷0.2÷3.5=3
解析分析：本题根据小数加、减、乘、除及四则混合运算的运算法则计算即可．
点评：完成本题要注意分析式中数据，能简算的要简算．