人教版小升初数学总复习计算题解方程和解比例专项
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人教版小升初数学总复习计算题解方程和解比例专
项
The document was prepared on January 2, 2021
2018年人教版小升初数学总复习
计算题解方程和解比例专项
1-= x :18=3
2:4
3
31x ÷5 = 31 53 ÷x = 7
6
X =18 + 60% X (2x +1)+3= 3
5
X + ×8=95 40%X+30=80 4x +
2
1x = 9
85:53= 5
2:x 2.5 :5 =
21 :X 21-2X = 4
1
66.1= 4.2X :X=20
1
:60℅ X: 5 =3018:21 x 4.1 =154
.0
:X = 4
11:2 :X = :253
:= X:531 := X:8
7
2
:=12:X 32: 4
1
=: X
45:X=18:26 9:= X:
x:
201 =43:51
( x ):7 =2:7 X 8.0=57 x : 7
5= :145
5(X +3)= 20 -×5 = 7X -3X = 12÷(-1)=6 9×3- = 3(X +2)=4(X +1)
1+= 68-=65 15-2x -6=8 32x -7x -5x=420 ÷4= (10-×x=×8 -18=13x +9 X ﹕3 = ﹕
12﹕X = 81﹕4
1 18﹕(X -1)=2﹕7
61﹕X =94﹕32 25.125.0 = X
6.1 X ﹕5 =1÷3 x-52
x=14
53+41x=2017
7-32=2x 31X+5=21X 53X +5
2= 5 x -85x=31
×45
X ÷21=117 ÷X=÷3 21X -31
X=5
43X +21=1 X ÷21=117
÷X=3÷ 21X -31X=5 43X +21=1 43X -85=43×2
1
÷X=5÷ X -209X =33 21
8
=÷X
(2+15 )X =2215 9 X -5 X =38 1-29 X =3
5
X -31X =32 8X +31=97 5X -65=12
5
X +97X =34
12 X +25%=10 ×3X =
X ÷= (-X )×= X - X =×
12 X +23 X =14 8.0:548
:10=
χ ×()= 9×= 67
9:672121=
χ x:3
2=60:5 7x+5
2= 5x-20%x=