问题 解答题
怎样计算简单就怎样算:
4
7
-
3
14
)÷
1
28
    
0.5×2.5×12.5×64.
答案

(1)(

4
7
-
3
14
)÷
1
28

=(

4
7
-
3
14
)×28,

=

4
7
×28-
3
14
×28,

=16-6,

=10;

(2)0.5×2.5×12.5×64,

=0.5×2.5×12.5×4×2×8,

=(0.5×2)×(2.5×4)×(12.5×8),

=1×10×100,

=1000.

单项选择题 A1/A2型题
单项选择题