2.8+2.8x0.9算式

冀超罡17002.8 (0.9 3.7 - 2.2)简便计算 -
游侵致13991983187 ______ 2.8 (0.9 3.7-2.2)简便计算2.8 (0.9 3.7-2.2)=2.8+2.2-(0.9+3.7)=5-4.6=0.4

冀超罡17002.8*0.9等于横式计算 -
游侵致13991983187 ______ 2.8*0.9等于横式计算 解:2.8*0.9=2.8*1-2.8*0.1=2.8-0.28=2.52

冀超罡17002.8乘9.9的简便计算是什么 -
游侵致13991983187 ______ 2.8x9.9=2.8x(10-0.1)=28-0.28=27/72

冀超罡17007.8十2.8x0.9简便方法脱式计算 -
游侵致13991983187 ______ 7.8十2.8x0.9简便方法脱式计算 7.8十2.8x0.9 =7.8+2.61 =10.41 直接计算

冀超罡17002.8x99+2.8算的过程 -
游侵致13991983187 ______ =2.8*9.9+2.8*1 =2.8*10 =28

冀超罡17002.8*1.9+32.5简便方法怎么算 -
游侵致13991983187 ______ 2.8*1.9+32.5简便方法怎么算=2.8x2-2.8x0.1+32.5=5.6-0.28+32.5=32.5+6-(0.4+0.28)=38.5-0.68=38.5-1+0.32=37.82

冀超罡17002.8x(0.9+1.9)的简便运算 -
游侵致13991983187 ______[答案] 2.8x(0.9+1.9) =2.8*(3-0.2) =2.8*3-2.8*0.2 =8.4-0.56 =7.84

冀超罡17007.2χ+2.8χ=9怎么算的 -
游侵致13991983187 ______ 7.2χ+2.8χ=9 10χ=9 χ=0.9 有用的话,记得采纳哦!么么哒!^-^

冀超罡17000.64x7.8+2.8x0.64简便计算 -
游侵致13991983187 ______[答案] 0.64x7.8+2.8x0.64 =0.64x(7.8+2.8) =0.64x(10+0.6) =0.64x10+0.64x0.6 =6.4+0.384 =6.784

冀超罡17002.8脳0.5 - 1.8脳0.5简便运算 -
游侵致13991983187 ______ 2.8x0.5-1.8x0.5=(2.8-1.8)x0.5=1x0.5=0.5