5.32＋7.93＋4.68              2.5×0.39×0.4   

32.1－8.3－1.7               12.39－(5.18＋2.39)   

(25＋2.5＋0.25)×4            1.8×3.5＋2.5×1.8     

12.5×8.8                    3.6×1.2÷3.6×1.22     

6.8×3.6＋2.68×            1.31×12.5×8×2   

1.25×32×0.25                3.8×0.99         

 简便计算(2)

4.6×99+4.6                 7.5×101-7.5

1.25×2.5×（80×4）          4.6×47+4.6×54-4.6 

7.68÷2.5÷0.4               0.45×72+45×0.18+4.5  

5.5×99                    0.125×72  

12.5×0.4×2.5×8          9.5×101

4.2×7.8+2.2×4.2         0.87×3.36+4.×0.87

简便计算(3)

4.08×0.25               490×0.35

5.28×99                12.5×4.12×0.8

5.7×10.1             49×0.125×8

0.4×63×2.5          0.5×7.6×20

0.34×101       4.86×99            4.9×101  

8.75 ×11-8.75      9.9 ×212     0.68×101

简便计算(4)

3.26 ×5.7-3.26×0.7      55.6×99+55.6

1.25 ×213×0.8          6.1×3.6+3.6×3.9

4.75×99+4.75            2.73×99

1.2×2.5+0.8×2.5        101×0.45

0.25×4.78×4           0.65×202

7.2×8.4+2.8×8.4       0.78×98

4.8×0.25      1.5×105     0.3×2.5×0.4

简便计算(5)

56×1.25    1.25+4.6+0.75      1.6×7.5×1.25

49×0.125×8      0.4×63×2.5     0.5×7.6×20

9.6×100.1        42×10.2        9.8÷0.5÷2

28.4×99+28.4             0.94×2.5-0.9×2.5

4×0.8×12.5×2.5         3.6×101

0.125×72             0.25×39+0.25

简便计算(6)

3.2×0.82+3.2×1.18       1.58×99+1.58

10÷0.2÷2.5       14.5×102     1.25×3.2×0.25

12.15-3.83+0.85-6.17      2.65×1.7+1.35×1.7

3.55×0.4÷3.55×0.4       0.125×0.38×80

18.6-18.6×0.5         3.58×3.6+6.4×3.58

3.05÷0.25÷4      4.25×0.4÷4.25×0.4

解方程（1）

20-X=9             X-1.8=4            15-X=2

2.1÷X=3           X ÷7=0.3          1.6X=6.4

6X-35=13          3X-12×6=6        (5X-12) ×8=24

(100-3X) ÷2=8       6X+3=9          4X-2=10 

5X-39=56            18+5X=21          8X-4×14=0

7X÷3=8.19          43-X=38           6.3÷X=7

解方程（2）

7(X-20)=140        6.7X-60.3=6.7         9X+X=0

4(6X+3)=60         2X+23×4=134        (3X-4) ×5=4  

2X+1.5X=17.5       8X-3X=105           3X+X+6=26

3X+6=18            2X-7.5=8.5         16+8X=40

4X-3×9=29         2(X-2.6)=8        5(X+1.5)=17.5

8(X-6.2)=41.6     (X-3) ÷2=7.5      13.2X+9X=33.3

解方程（3）

8X-3X=105       5.4X+X=12.8        X-0.36X=16

X+4.8=7.2       X-6.5=3.2         X÷8=0.4

6X+18=48        3(X+2.1)=10.5       12X-9X=8.7

3.8+X=6.3         X-7.9=2.6        2.5X=14

X÷3=1.2       3.4X-48=26.8        2X-97=34.2

42X+25X=134       13(X+5)=169      5X+7=42

解方程（4）

X÷4.2=2         3.6X-X=3.25       2(X-3)=5.8

X÷1.44=0.4      3.85+1.5X=6.1      6X-0.9=4.5

7.8X+2.4X=20.4      2(X+1)=6       6(X-1.5)=15

4X-12×3=100        (X-5) ÷3=7      X-0.28X=3.6

0.3×4-2X=0.2        4(X+6)=36        X-0.8X=1.2

6X-2X=20          0.5+7X=18        3X-6×8=0

解方程（5）

8X+19=51        2.7X-14=21.1       X-0.38X=1.24

5.3X-2X=1.32       4(X+4.5)=20       5X-7.3=7.7

3.6X+8.5=22.9      7X+4 ×3.5=24.5      5X+28=48

6X-12=30          45-3X=24          54-X=24     

7X=49          126÷X=42       3.5-X=2.5

1.8 ÷X=2        9X=927        19.4-X=7

列方程并求方程的解

1.X的7倍比52多25。      2.X的9倍减去5，等于49。

3.X加上26等于54。         4.X与5的积是85。

5.X与2.3的差是4.7。       6.X除以12等于4。

7.0.3与14的积比X的3倍少6。

8.X的5倍比3与7.2的积小3.4。

9.8X与3X的差等于27.7与4.8的差。

10.X的7倍减去21，差是14。

11.X的5倍比X的2倍多12。下载本文