计算下列各题.(能简算的要简算)7÷79-79÷715÷89+15×78322÷[54÷(143-12)]3-518×2740-1316815÷[532×(910+16)]126×(7×26)-数学

8+
7
8
)×15,
=2×15,
=30;

3
22
÷[
5
4
÷(
14
3
-
1
2
)],
=
3
22
÷[
5
4
÷
25
6
],
=
3
22
÷
3
10

=
5
11


④3-
5
18
×
27
40
-
13
16

=3-
3
16
-
13
16

=3-(
3
16
+
13
16
),
=3-1,
=2;

8
15
÷[
5
32
×(
9
10
+
1
6
)],
=
8
15
÷[
5
32
×
32
30
],
=
8
15
×6,
=
16
5


1
26
×(7×26),
=
1
26
×26×7,
=1×7,
=7.

据专家权威分析,试题“计算下列各题.(能简算的要简算)7÷79-79÷715÷89+15×78322÷[54÷(14..”主要考查你对  分数的四则混合运算及应用  等考点的理解。关于这些考点的“档案”如下: