(-20.75)+13/4+(-4.25)+79/4=?
1个回答
(-20.75)+13/4+(-4.25)+79/4
=(-20.75-4.25)+(13/4+79/4)
=-25+23
=-2
相关问题
13.6-4.25-5.75+6.4简便运算
(2x-7)/25=(4x-13)/75
(2x-7)/25=(4x-13)/75
1/15÷3.25+8/13× 4/15+4/13÷3.75
(1)75%x+25%x=6 (2)4x+20%x=13.86 (3)60%x-35%x=75 (4)x:15=6:3
简便计算. (20+4)×25 723-79-321 37×99+37 59+79+41+21 25×30×4 24×2
1/15/3.25+8/13*4/15+4/13/3.75请用简便方法计算。
简算13.75-(6.25-4.86)-9.86
3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25
化简下列比 (9/2:3.75) (13%:1/25) (4.9:7/20) (3千克:800克)