(-0.15)-(-3.25)+2.75—-(-7.5 )=?
(-0.15)-(-3.25)+2.75—-(-7.5 )=?
(-0.5)-(-3.25)-2.75-(+7.5)怎么算
(+0.5)+(-3.25)+(-2.75)+(+5.5)
-0.5-[-3.25]+2.75-7.5=
-(+0.5)-(-3.25)+2.75-(+7.
(-1.5+2.75)÷(-0.25)=
(-0.5)-(—三又四分之一)+2.75-(+七又二分之一)=计算过程
(1)2(X-2)/0.3—(X-2)/0.15=1.2—X
0.28*0.15=( )2.8*0.15=( )
8分之一=( ):24=3.25:( )=( )%
12.75+3.87-2.75=?(简便计算)
【 】除以(2.35+1.65)除以6.2=1 (3.8+【 】)除以1.6=3.25 14.7除以(8.5—【 】)=