题目内容
计算.(能简算的要简算)
3.68×[1÷(2.1-2.09)]
5
÷1
+
×5
+5
4-[3.75×(1.2-
)+
]
÷(
+
)×2
.
3.68×[1÷(2.1-2.09)]
5
| 2 |
| 3 |
| 4 |
| 5 |
| 4 |
| 9 |
| 2 |
| 3 |
| 2 |
| 3 |
4-[3.75×(1.2-
| 1 |
| 3 |
| 3 |
| 4 |
| 4 |
| 9 |
| 7 |
| 9 |
| 4 |
| 9 |
| 3 |
| 4 |
(1)3.68×[1÷(2.1-2.09)]
=3.68×[1÷0.01],
=3.68×100,
=368;
(2)5
÷1
+
×5
+5
=5
×
+
×5
+5
,
=(
+
+1)×5
,
=2×5
,
=11
;
(3)4-[3.75×(1.2-
)+
]
=4-[
×(
-
)+
],
=4-[
×
+
],
=4-[
+
],
=4-4,
=0;
(4)9÷(
+
)×2
=9÷
×
,
=9×
×
,
=20
.
=3.68×[1÷0.01],
=3.68×100,
=368;
(2)5
| 2 |
| 3 |
| 4 |
| 5 |
| 4 |
| 9 |
| 2 |
| 3 |
| 2 |
| 3 |
=5
| 2 |
| 3 |
| 5 |
| 9 |
| 4 |
| 9 |
| 2 |
| 3 |
| 2 |
| 3 |
=(
| 5 |
| 9 |
| 4 |
| 9 |
| 2 |
| 3 |
=2×5
| 2 |
| 3 |
=11
| 1 |
| 3 |
(3)4-[3.75×(1.2-
| 1 |
| 3 |
| 3 |
| 4 |
=4-[
| 15 |
| 4 |
| 6 |
| 5 |
| 1 |
| 3 |
| 3 |
| 4 |
=4-[
| 15 |
| 4 |
| 13 |
| 15 |
| 3 |
| 4 |
=4-[
| 13 |
| 4 |
| 3 |
| 4 |
=4-4,
=0;
(4)9÷(
| 7 |
| 9 |
| 4 |
| 9 |
| 3 |
| 4 |
=9÷
| 11 |
| 9 |
| 11 |
| 4 |
=9×
| 9 |
| 11 |
| 11 |
| 4 |
=20
| 1 |
| 4 |
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