题目内容
脱式计算.(能简算的要简算)
| 4÷
|
| ||||||||||||||||||||
|
| 12-10÷7-
|
(1)
+
+
+
=(
+
)+(
+
)
=1+2
=3
(2)4÷
-
÷4
=9-
=c
(3)
÷
+
÷
=
×
+
×
=
×(
+
)
=
×1
=
(4)
÷[(
-
)÷
]
=
÷[
÷
]
=
÷
=6
(f)
×(
+
÷
)
=
×(
+
)
=
×
=
(6)12-1c÷7-
=12-
-
=12-(
+
)
=12-2
=1c
| f |
| 9 |
| 3 |
| 11 |
| 4 |
| 9 |
| 19 |
| 11 |
=(
| f |
| 9 |
| 4 |
| 9 |
| 3 |
| 11 |
| 19 |
| 11 |
=1+2
=3
(2)4÷
| 4 |
| 9 |
| 4 |
| 9 |
=9-
| 1 |
| 9 |
=c
| c |
| 9 |
(3)
| f |
| c |
| 7 |
| 3 |
| f |
| c |
| 7 |
| 4 |
=
| f |
| c |
| 3 |
| 7 |
| f |
| c |
| 4 |
| 7 |
=
| f |
| c |
| 3 |
| 7 |
| 4 |
| 7 |
=
| f |
| c |
=
| f |
| c |
(4)
| 3 |
| f |
| 3 |
| 4 |
| 2 |
| 3 |
| f |
| 6 |
=
| 3 |
| f |
| 1 |
| 12 |
| f |
| 6 |
=
| 3 |
| f |
| 1 |
| 1c |
=6
(f)
| 7 |
| 1f |
| 4 |
| 21 |
| c |
| 1f |
| 7 |
| 1c |
=
| 7 |
| 1f |
| 4 |
| 21 |
| 16 |
| 21 |
=
| 7 |
| 1f |
| 2c |
| 21 |
=
| 4 |
| 9 |
(6)12-1c÷7-
| 4 |
| 7 |
=12-
| 1c |
| 7 |
| 4 |
| 7 |
=12-(
| 1c |
| 7 |
| 4 |
| 7 |
=12-2
=1c
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