解方程
[5x*56+(-3^3-x)]/9=5
89x/3-5^2-(8-5x)/5=541
x+7-(-36+8^2)/2=8+7^4/3
a-7-98+7a=3.2*5a
89/2+35/6x=3*9+2^3/5+7x
3X+189/3=521/2
4Y+119*^3=22/11
7(2x-1)-3(4x-1)/9=[4(3x+2)-1]/9
[(5y+1)+ (1-y)]/2= [(9y+1)+ (1-3y)]/3
[-6(-7^4*8)-4]/5=(x+2)/6
2/3*8*1/4x=89/2
20%/5+(1-20%)(320-x)/9=320×40%/3
2(x-2)/6+2/9=(x+1)/2
2(x-2)/2-3(4x-1)/3=9(1-x)/2
11x/2+(64-2x)/6=(100-9x)/8
15-(8-5x)/2=7x/3+(4-3x)/4
3(x-7)/4-2[9-4(2-x)]/9=22/3
3/2[2/3(1/4x-1)-2]-x/9=2/5
2x+7^2/2=157/5
[(87x-5*8)+(-9*5)]-7x=150
5x+(-7^2)/2-5/8=136/5
[3.15x+(-9*8x)]-9+(-3x-9)=100
1/9+5/8x-(-1/8+5/2x)=64
5x/3[7*3(1/4-1)-2x]-x/9=2x/5
j簡(jiǎn)算
4/9×3= 5÷1/3 = 1/2÷1/3 = 2/7×3/9 ÷2/7 = 21/25÷42= 4/5×3/4 = 8.7×0.2= 4×0.25= 1/7×14= 2/3÷5/6= 1.25×8= 3/5÷5/8= 6/7×3/2= 6×8.8= 4/11÷4= 4/9×3/8= 5/3÷5= 0÷8/3= 4/7 －2/3= 2/7×2 ＝ 41/12×4= 4÷3/16= 12÷9/4 = 75/8 ÷5= 12×16/9 ＝ 2/3×3＝ 8÷9/4 ＝ 5/3÷3/5 ＝ 4/5×5/8 ＝ 7/9×9/7 ＝ 2.64＋3.6= 2.4×50= 3500÷70= 2050－298= 2＋7÷9= 0.3÷3%= 81.2－11÷7－×3= 6696÷62－6.5×10.6 =
1.89÷100= 0.82+0.08= 73×1= 0.63×10= 4÷10= 17÷1000=
0.56+0.4= 1.25×100= 5.6+99=
100÷25= 1-0.93= 90-0.9=
794－198= 68×25= 6756－193－207=
72×12
2.8×0.4＝ 1.12
14－7.4＝6.6,1.92÷0.04＝48,0.32×500＝160,0.65＋4.35＝ 5
10－5.4＝4.6,4÷20＝0.2,3.5×200＝700,1.5－0.06＝1.44
0.75÷15＝0.05,0.4×0.8＝0.32,4×0.25＝1,0.36＋1.54＝2
1.01×99＝99.99,420÷35＝12,25×12＝300,135÷0.5＝270
3/4 + 1/4 =1,2 + 4/9 =22/9,3 - 2/3 =7/3,3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2,7.5-(2.5+3.8)=1.2,7/8 + 3/8 =5/4
3/10 +1/5 =1/2,4/5 - 7/10 =1/10,2 - 1/6 -1/3 =1.5
0.51÷17＝0.03,32.8＋19＝51.8,5.2÷1.3＝4,1.6×0.4＝ 0.64
4.9×0.7＝3.43,1÷5＝0.2,6÷12＝0.5,0.87－0.49＝0.38
4/9×3= 5÷1/3 = 1/2÷1/3 = 2/7×3/9 ÷2/7 = 21/25÷42= 4/5×3/4 = 8.7×0.2= 4×0.25= 1/7×14= 2/3÷5/6= 1.25×8= 3/5÷5/8= 6/7×3/2= 6×8.8= 4/11÷4= 4/9×3/8= 5/3÷5= 0÷8/3= 4/7 －2/3= 2/7×2 ＝ 41/12×4= 4÷3/16= 12÷9/4 = 75/8 ÷5= 12×16/9 ＝ 2/3×3＝ 8÷9/4 ＝ 5/3÷3/5 ＝ 4/5×5/8 ＝ 7/9×9/7 ＝ 2.64＋3.6= 2.4×50= 3500÷70= 2050－298= 2＋7÷9= 0.3÷3%= 81.2－11÷7－×3= 6696÷62－6.5×10.6 =
1.89÷100= 0.82+0.08= 73×1= 0.63×10= 4÷10= 17÷1000=
0.56+0.4= 1.25×100= 5.6+99=
100÷25= 1-0.93= 90-0.9=
794－198= 68×25= 6756－193－207=
5= 97×360＋3×360=
豎式計(jì)算
6.34+14.56= 3.83+0.9= 0.59+1.41= 8.3+0.69=
53.3+2.47= 6.35+3.65= 9.435+8.37= 37.8+3.02=
7.81-4.5= 8.73-3.45= 5.13-1.04= 10-5.9=
209×43 8652÷36
825÷25= 9864÷48= 900÷22= 57×307 59×198=
689÷34= 1105÷55= 504×32= 358÷25 538÷33=
986÷29= 13320÷70= 603×36= 812÷57= 860÷30=
647÷27= 786÷94= 689÷21= 783÷58= 45×368=
750×40= 188×25= 2704÷26= 343÷32= 4800÷600
2700÷300 986÷29= 25×480= 905÷45= 450×78=
899÷36= 367÷29= 99007÷45 7403÷68= 864÷57=
給分吧