题目内容

用你喜欢方法计算.
101001-45×623
7.63×9.9+0.763
2
3
-
1
2
)÷(
3
4
+
1
3

8
9
×[
3
4
-(
7
16
-
1
4
)].
(1)101001-45×623,
=101001-28035,
=72966;

(2)7.63×9.9+0.763,
=7.63×9.9+7.63×0.1,
=7.63×(9.9+0.1),
=7.63×10,
=76.3;

(3)(
2
3
-
1
2
)÷(
3
4
+
1
3
),
=
1
6
÷
13
12

=
2
13


(4)
8
9
×[
3
4
-(
7
16
-
1
4
)],
=
8
9
×[
3
4
-
3
16
],
=
8
9
×
9
16

=
1
2
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