题目内容
(2
×
+2
×6.2-5.8×2
-
÷
)×
.
2 |
9 |
4 |
5 |
2 |
9 |
2 |
9 |
1 |
5 |
9 |
20 |
9 |
20 |
(2
×
+2
×6.2-5.8×2
-
÷
)×
,
=(2
×0.8+2
×6.2-5.8×2
-0.2×2
)×
,
=[(0.8+6.2)-(5.8+0.2)]×2
×
,
=(7-6)×(
×
),
=1×1,
=1.
2 |
9 |
4 |
5 |
2 |
9 |
2 |
9 |
1 |
5 |
9 |
20 |
9 |
20 |
=(2
2 |
9 |
2 |
9 |
2 |
9 |
2 |
9 |
9 |
20 |
=[(0.8+6.2)-(5.8+0.2)]×2
2 |
9 |
9 |
20 |
=(7-6)×(
20 |
9 |
9 |
20 |
=1×1,
=1.
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