
递等式计算(能简算的要简算).(1)168.1÷(4.3×2-0.4)(2)(45+14)÷73+710(3
递等式计算(能简算的要简算).(1)168.1÷(4.3×2-0.4)(2)(45+14)÷73+710(3)57×17+57÷75....
递等式计算(能简算的要简算).(1)168.1÷(4.3×2-0.4)(2)(45+14)÷73+710(3)57×17+57÷75.
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(1)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)(
+
)÷
+
,
=
×
+
,
=
+
,
=
;
(3)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=
×
,
=
.
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)(
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
=
21 |
20 |
3 |
7 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(3)
5 |
7 |
1 |
7 |
5 |
7 |
7 |
5 |
=
5 |
7 |
1 |
7 |
5 |
7 |
5 |
7 |
=(
1 |
7 |
5 |
7 |
5 |
7 |
=
6 |
7 |
5 |
7 |
=
30 |
49 |
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