问题 解答题
怎样简便就怎样算.
16×
2
3
×(9×
1
8
)
1
4
+
37
7
×
1
4
4
9
×[
3
4
-(
7
16
-
1
4
)]
答案

(1)16×

2
3
×(9×
1
8
),

=16×

2
3
×9×
1
8

=(16×

1
8
)×(
2
3
×9),

=2×6,

=12;

(2)

1
4
+
37
7
×
1
4

=(1+

37
7
)×
1
4

=

44
7
×
1
4

=

11
7

(3)

4
9
×[
3
4
-(
7
16
-
1
4
)],

=

4
9
×[
3
4
-
7
16
+
1
4
],

=

4
9
×[(
3
4
+
1
4
)-
7
16
],

=

4
9
×[1-
7
16
],

=

4
9
×
9
16

=

1
4

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