0.5+(-3/4)+(-5.25)+(+1/2)
0.5+(-3/4)+(-5.25)+(+1/2)
(1)4/(75%+50%-1) (2)4.75*37.5%+8分之3*5.25
能简算的要简算 (1)4/(75%+50%-1) (2)4.75*37.5%+8分之3*5.25 (3)5分之4×20%
计算:(1) (+2)+(-8) (2) (-8.8)-(+7) (3) (46.45)+(-5.25)+18.54+(
8.875+(5.25-3又7/9) 2.75+23/28+1又1/4+2.625
(1) (2) (3)(x+0.5)×2分之1=4
—3.75+6又3分之1+(—2又3分之1)+(—5.25)要算式
(1)2(4x-0.5)
(-0.5)-(-3又4分之1)+2.75-(+7又2分之1)
(-0.5)+(3又1/4)+2.75+(-5又1/2) =
(-5 右2分之1)-(-2.75)+3 右4分之1+(-0.5)=?
数学一道计算(-0.5)+3又1/4+(-5又1/2)+(+6)