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1、精选优质文档-倾情为你奉上脱式计算1(+) 3 (1) 7(+) 25() + ()(+) 1(+)3.5 (1)4 +(+) 12(1) (1) (1)44 + + () ()1511 1(+) 3(-) 10 50 (1+)3 18 (+) 4-(-) 0.6 (2-0.6)(+) 0.375 4-0.6 +(+)15 14 (+)15 ()(4) ()() 15() () 4() 7.81.6(1)6.8 2.8(1.50.3) +() ()() (+) ()() 111056() () 15()55 ()(4) ()+ 5() ()(2) (1) 1() 2 () 25 (1) 7()
2、(+) 1(+)3.5(+) (+) (+)2- - (0.75- )(+) 1-(+) () () 2.050.812.74.513.098.124.88 12103450075 37.519.52.54 0.4(3.850.4)13.8 234.4(3.35.9) 1.560.3(0.740.58)8358118595941 181.50.50.3 1.917.869.419 8853114575741 (6.254016)3.5 12.52.54 3.20.2524 14.844.085.8 4.8(0.30.2+0.18) 用简便方法计算: ()70 97 8+2 15+15(+)72
3、 72(+) (+)9+ 30(+)12(+) + 48(+) 30(+)9+ 24(+) (+)6027 5(9+) + 2 + () 24() 4343 ()72 6.13 7.25 55() (-)21+ () 24 16 ( 18( 1.819.2 15.64-+4.36- ( 60( ( 20-( () (20.5)100.2 6.86.846.86.8 5.21 0.2512.5 97474+974+97425 1253225 25370.4 15.72.393.61 1010.67 2.57.34 27.51.258 1.253.22.5 8.9998.9 87 1258754
4、76240.125 32.627767.4 34521998 11592999 0.253212.5 761.04+1.0425-1.04 7.52.37+250.189解方程:+X = 2X = 3X1.42=1.1 X+=5.5x3x = 1.75 X+ = X = 15 X(+)= X(1+)= 25 (1)X = X = 10 X = 8X = 15X = 7X4X = 21 X+x = 20 x+45 = 12 X25X5=X19 5 = = X 60% X =18 X + 2.58=95 40%X+30=80 x304+ = 9 -= = (+)= X= X= X= 5X=X= X
5、= X 4X+2(8-X)=26 3X1.231.2 XX18 0.4X7103 4(X)8 0.25+X 5X 1.2(3.8X)10.8 X12024()X22 16.45X=4.4 0.8(X0.8)8 XX49X 3X X X+X=25 1X0.8 XX55110 X 2X51.51.5 X5X 1X0.6 XX21 XX40 X20 2X4.5889 7X X X X() X8 X (X10)56XX10 3.5X1.812.3 5X210 XX3 解比例:0.3X X x:10=41:31 0.4:x=1.2:2 4:2=x:3 21:51=41:x 0.8:4=x:8 42:x=
6、3:12 1.25:0.25=x:1.6 9:2=x:8 x:36=3:54 x:32 =6:2524 x:5.4=2:27 45:x=18:26 2.8:4.2=x:9.6 101:x=81:41 2.8:4.2=x:9.6 x:24=43:31 8:x=54:43 85:61=x:121 0.6:42.4:x 6:x15:13 0.6:121.5:x 34:15x:45 1112:452536:x x:1140.7:12 10:50x:40 1.3:x5.2:20 x:3.66:18 13:120169:x 4:608:x 3:8x:64x:0.6:4 ::x x: :0.3: :12 :=12:3 1.25:5=0.75: :=:6 : =: = 4:6=15:专心-专注-专业