题目内容
怎样算简便就怎样算.
×
÷
;
(15-14×
)×
;
÷[(
+
)×
];
×58+42÷8;
×
-
÷
.
| 4 |
| 9 |
| 1 |
| 5 |
| 4 |
| 5 |
(15-14×
| 4 |
| 7 |
| 8 |
| 21 |
| 4 |
| 5 |
| 1 |
| 3 |
| 2 |
| 5 |
| 4 |
| 11 |
| 1 |
| 8 |
| 7 |
| 2 |
| 5 |
| 8 |
| 3 |
| 2 |
| 8 |
| 5 |
(1)
×
÷
=
×
×
=
(2)(15-14×
)×
=(15-8)×
=7×
=
(3)
÷[(
+
)×
]
=
÷[
×
]
=
÷
=
×
=3
(4)
×58+42÷8
=
×58+42×
=
×(58+42)
=
×100
=12.5
(5)
×
-
÷
=
×
-
×
=(
-
)×
=2×
=
(6)
×40%+0.75×
=
×
+
×
=
×(
+
)
=
×1
=
| 4 |
| 9 |
| 1 |
| 5 |
| 4 |
| 5 |
=
| 4 |
| 9 |
| 1 |
| 5 |
| 5 |
| 4 |
=
| 1 |
| 9 |
(2)(15-14×
| 4 |
| 7 |
| 8 |
| 21 |
=(15-8)×
| 8 |
| 21 |
=7×
| 8 |
| 21 |
=
| 8 |
| 3 |
(3)
| 4 |
| 5 |
| 1 |
| 3 |
| 2 |
| 5 |
| 4 |
| 11 |
=
| 4 |
| 5 |
| 11 |
| 15 |
| 4 |
| 11 |
=
| 4 |
| 5 |
| 4 |
| 15 |
=
| 4 |
| 5 |
| 15 |
| 4 |
=3
(4)
| 1 |
| 8 |
=
| 1 |
| 8 |
| 1 |
| 8 |
=
| 1 |
| 8 |
=
| 1 |
| 8 |
=12.5
(5)
| 7 |
| 2 |
| 5 |
| 8 |
| 3 |
| 2 |
| 8 |
| 5 |
=
| 7 |
| 2 |
| 5 |
| 8 |
| 3 |
| 2 |
| 5 |
| 8 |
=(
| 7 |
| 2 |
| 3 |
| 2 |
| 5 |
| 8 |
=2×
| 5 |
| 8 |
=
| 5 |
| 4 |
(6)
| 3 |
| 4 |
| 3 |
| 5 |
=
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 4 |
| 3 |
| 5 |
=
| 3 |
| 4 |
| 2 |
| 5 |
| 3 |
| 5 |
=
| 3 |
| 4 |
=
| 3 |
| 4 |
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