题目内容
脱式计算:
×
+25%×
+0.25×
;
-(
+
);
[1-(
+
)]÷
.
| 3 |
| 7 |
| 1 |
| 4 |
| 2 |
| 7 |
| 1 |
| 7 |
| 12 |
| 7 |
| 5 |
| 7 |
| 1 |
| 2 |
[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
(1)
×
+25%×
+0.25×
,
=(
+
+
)×
,
=
×
,
=
;
(2)
-(
+
),
=
-
-
,
=1-
,
=
;
(3)[1-(
+
)]÷
,
=(1-
)÷
,
=
÷
,
=
.
| 3 |
| 7 |
| 1 |
| 4 |
| 2 |
| 7 |
| 1 |
| 7 |
=(
| 1 |
| 7 |
| 2 |
| 7 |
| 3 |
| 7 |
| 1 |
| 4 |
=
| 6 |
| 7 |
| 1 |
| 4 |
=
| 3 |
| 14 |
(2)
| 12 |
| 7 |
| 5 |
| 7 |
| 1 |
| 2 |
=
| 12 |
| 7 |
| 5 |
| 7 |
| 1 |
| 2 |
=1-
| 1 |
| 2 |
=
| 1 |
| 2 |
(3)[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=(1-
| 5 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 2 |
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