题目内容
3÷4=6÷( )=( )÷12=
=
.
答案:8,9,20,12
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先观察,再计算.
|
(1)5 ×3+5= |
5 ×4= |
|
(2)7 ×3+3= |
8 ×3= |
|
(3)4 ×6+6= |
5 ×6= |
|
(4)2 ×5-2= |
2 ×4= |
|
(5)9 ×4+9= |
( )×( )= |
|
(6)7 ×5-7= |
( )×( )= |
|
(7)3 ×7+3= |
( )×( )= |
|
(8)6 ×1+6= |
( )×( )= |
解方程
5x+3.4=5.2
x=
[ ]
|
A.1.6 |
B.10.7 |
|
C.0.36 |
D.3.4 |