问题 解答题
用递等式计算(能简算的要用简便方法计算).
4.32+3.2+5.68
79×101-79
132+25×8
20-
3
25
×5
(0.125×8-0.5)×4
(0.25+
5
8
)÷(
7
4
-
7
8
答案

(1)4.32+3.2+5.68

=4.32+5.68+3.2,

=10+3.2,

=13.2;

(2)79×101-79

=(101-1)×79,

=100×79,

=7900;

(3)132+25×8

=132+200,

=332;

(4)20-

3
25
×5

=20-

3
5

=19

2
5

(5)(0.125×8-0.5)×4

=(1-0.5)×4,

=0.5×4,

=2;

(6)(0.25+

5
8
)÷(
7
4
-
7
8

=(

2
8
+
5
8
)÷(
14
8
-
7
8
),

=

7
8
÷
7
8

=1.

单项选择题 A1型题
判断题