题目内容
怎样算简便就怎样算.
103×25-4230÷30
-
-
×
×
+
÷
30÷2.5-1÷
22÷(
-
)×20%
25÷[1÷(
-
)].
103×25-4230÷30
| 11 |
| 9 |
| 7 |
| 12 |
| 3 |
| 4 |
| 5 |
| 9 |
| 7 |
| 13 |
| 6 |
| 7 |
| 6 |
| 7 |
| 13 |
| 6 |
30÷2.5-1÷
| 1 |
| 3 |
22÷(
| 2 |
| 3 |
| 1 |
| 7 |
25÷[1÷(
| 1 |
| 10 |
| 3 |
| 100 |
(1)103×25-4230÷30,
=2575-141,
=2434;
(2)
-
-
×
,
=
-
-
,
=
-(
+
),
=
-1,
=
;
(3)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)30÷2.5-1÷
,
=12-3,
=9;
(5)22÷(
-
)×20%,
=22×
×0.2,
=42×0.2,
=8.4;
(6)25÷[1÷(
-
)],
=25÷[1÷
],
=25×
,
=
.
=2575-141,
=2434;
(2)
| 11 |
| 9 |
| 7 |
| 12 |
| 3 |
| 4 |
| 5 |
| 9 |
=
| 11 |
| 9 |
| 7 |
| 12 |
| 5 |
| 12 |
=
| 11 |
| 9 |
| 7 |
| 12 |
| 5 |
| 12 |
=
| 11 |
| 9 |
=
| 2 |
| 9 |
(3)
| 7 |
| 13 |
| 6 |
| 7 |
| 6 |
| 7 |
| 13 |
| 6 |
=
| 7 |
| 13 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 13 |
=(
| 7 |
| 13 |
| 6 |
| 13 |
| 6 |
| 7 |
=1×
| 6 |
| 7 |
=
| 6 |
| 7 |
(4)30÷2.5-1÷
| 1 |
| 3 |
=12-3,
=9;
(5)22÷(
| 2 |
| 3 |
| 1 |
| 7 |
=22×
| 21 |
| 11 |
=42×0.2,
=8.4;
(6)25÷[1÷(
| 1 |
| 10 |
| 3 |
| 100 |
=25÷[1÷
| 7 |
| 100 |
=25×
| 7 |
| 100 |
=
| 7 |
| 4 |
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