问题 解答题
用简便方法计算
16×
2
3
×(9×
1
8
)
4
9
×[
3
4
-(
7
16
-
1
4
)]
6
1
2
×
3
5
+3.5
÷1
2
3
答案

(1)16×

2
3
×(9×
1
8
),

=16×

2
3
×
1
8

=12;

(2)
4
9
×[
3
4
-(
7
16
-
1
4
)],

=

4
9
×[
3
4
+
1
4
-
7
16
],

=

4
9
×
9
16

=

1
4

(3)6

1
2
×
3
5
+3.5÷1
2
3

=6.5×

3
5
+3.5×
3
5

=(6.5+3.5)×

3
5

=6.

单项选择题 B1型题
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