14.21 7简便方法计算

望采纳谢谢

14.21-14.21*0.7=14.21*(1-0.7)=14.21*0.3=4.263

0.45*0.6 + 14.21/7= 0.27 + 2.03= 2.30

(14.21+3.5)÷0.7=14.21÷0.7+3.5÷0.7=20.3+5=25.3

(14.21 3.5)÷0.07简便算法(14.21+3.5)÷0.07=14.21÷0.07+3.5÷0.07=203+50=253

=14.21÷(3.5X2)=14.21÷7=2.3

原式=14.21÷0.7-10.8=14÷0.7+0.21÷0.7-10.8=20+0.3-10.8=20.3-10.8=9.5供参考.

23.2-14.2*0.7=( )用简便方法计算23.2-14.2*0.7=23.2-9.94=13.26 直接计算

14.21加0.56的和除以零点7有简算吗(14.21+0.56)÷0.7=14.21÷0.7+0.56÷0.7=20.3+0.8=21.1希望能帮到你