题目内容
递等式计算.
(1)
×0.25+
×
(2)25×
×
×
(3)3÷
-
×
(4)
÷[(
+
)÷
].
(1)
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
(2)25×
| 1 |
| 3 |
| 2 |
| 5 |
| 3 |
| 10 |
(3)3÷
| 1 |
| 2 |
| 1 |
| 4 |
| 3 |
| 10 |
(4)
| 3 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 8 |
| 9 |
(1)
×0.25+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)25×
×
×
,
=(25×
)×(
×
),
=10×
,
=1;
(3)3÷
-
×
,
=6-
×
,
=6-
,
=5
;
(4)
÷[(
+
)÷
],
=
÷[
÷
],
=
÷
,
=1.
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
=
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 6 |
=(
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 4 |
=1×
| 1 |
| 4 |
=
| 1 |
| 4 |
(2)25×
| 1 |
| 3 |
| 2 |
| 5 |
| 3 |
| 10 |
=(25×
| 2 |
| 5 |
| 1 |
| 3 |
| 3 |
| 10 |
=10×
| 1 |
| 10 |
=1;
(3)3÷
| 1 |
| 2 |
| 1 |
| 4 |
| 3 |
| 10 |
=6-
| 1 |
| 4 |
| 3 |
| 10 |
=6-
| 3 |
| 40 |
=5
| 37 |
| 40 |
(4)
| 3 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 8 |
| 9 |
=
| 3 |
| 5 |
| 8 |
| 15 |
| 8 |
| 9 |
=
| 3 |
| 5 |
| 3 |
| 5 |
=1.
练习册系列答案
相关题目