题目内容
| 计算下面各题(能简算的简算). 200-180÷15×2 | 46.71-6.81-3.19 | ||||||||||||||||
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(1)200-180÷15×2,
=200-12×2,
=200-24,
=176;
(2)46.71-6.81-3.19,
=46.71-(6.81+3.19),
=46.71-10,
=36.71;
(3)
×15×
,
=9×
,
=2;
(4)
÷(
-
)×
,
=
÷
×
,
=
×
×
,
=
;
(5)
×
+
÷
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(6)
÷[(
+
)×
],
=
÷[
×
],
=
÷
.
=
×
,
=3.
=200-12×2,
=200-24,
=176;
(2)46.71-6.81-3.19,
=46.71-(6.81+3.19),
=46.71-10,
=36.71;
(3)
| 3 |
| 5 |
| 2 |
| 9 |
=9×
| 2 |
| 9 |
=2;
(4)
| 1 |
| 3 |
| 2 |
| 3 |
| 2 |
| 5 |
| 3 |
| 5 |
=
| 1 |
| 3 |
| 4 |
| 15 |
| 3 |
| 5 |
=
| 1 |
| 3 |
| 15 |
| 4 |
| 3 |
| 5 |
=
| 3 |
| 4 |
(5)
| 5 |
| 13 |
| 1 |
| 7 |
| 6 |
| 7 |
| 13 |
| 5 |
=
| 5 |
| 13 |
| 1 |
| 7 |
| 6 |
| 7 |
| 5 |
| 13 |
=
| 5 |
| 13 |
| 1 |
| 7 |
| 6 |
| 7 |
=
| 5 |
| 13 |
=
| 5 |
| 13 |
(6)
| 9 |
| 8 |
| 2 |
| 5 |
| 1 |
| 10 |
| 3 |
| 4 |
=
| 9 |
| 8 |
| 1 |
| 2 |
| 3 |
| 4 |
=
| 9 |
| 8 |
| 3 |
| 8 |
=
| 9 |
| 8 |
| 8 |
| 3 |
=3.
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