题目内容
计算题.
(1)4-[3.75×(1.2-
)+
]
(2)1
-(
-
)+
(3)1-
-
-
-
-
(4)
+
+
+
+
+
.
(1)4-[3.75×(1.2-
| 1 |
| 3 |
| 3 |
| 4 |
(2)1
| 3 |
| 7 |
| 7 |
| 9 |
| 4 |
| 7 |
| 8 |
| 9 |
(3)1-
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
(4)
| 2 |
| 11×13 |
| 2 |
| 13×15 |
| 2 |
| 15×17 |
| 2 |
| 17×19 |
| 2 |
| 19×?21 |
| 1 |
| 21 |
(1)4-[3.75×(1.2-
)+
],
=4-[
×(
-
)+
],
=4-[
×
-
×
+
],
=4-[
-
+
],
=4-4,
=0;
(2)1
-(
-
)+
,
=1
-
+
+
,
=(1
+
)+(
-
),
=2+
,
=2
;
(3)1-
-
-
-
-
,
=
-(
-
)-(
-
)-(
-
)-(
-
),
=
-
+
-
+
-
+
-
+
,
=
;
(4)
+
+
+
+
+
,
=(
-
)+(
-
)+(
-
)+(
-
)+(
-
)+
,
=
-
+
-
+
-
+
-
+
-
+
,
=
-
+
,
=
.
| 1 |
| 3 |
| 3 |
| 4 |
=4-[
| 15 |
| 4 |
| 6 |
| 5 |
| 1 |
| 3 |
| 3 |
| 4 |
=4-[
| 15 |
| 4 |
| 6 |
| 5 |
| 15 |
| 4 |
| 1 |
| 3 |
| 3 |
| 4 |
=4-[
| 9 |
| 2 |
| 5 |
| 4 |
| 3 |
| 4 |
=4-4,
=0;
(2)1
| 3 |
| 7 |
| 7 |
| 9 |
| 4 |
| 7 |
| 8 |
| 9 |
=1
| 3 |
| 7 |
| 7 |
| 9 |
| 4 |
| 7 |
| 8 |
| 9 |
=(1
| 3 |
| 7 |
| 4 |
| 7 |
| 8 |
| 9 |
| 7 |
| 9 |
=2+
| 1 |
| 9 |
=2
| 1 |
| 9 |
(3)1-
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
=
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 16 |
| 1 |
| 32 |
=
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 16 |
| 1 |
| 32 |
=
| 1 |
| 32 |
(4)
| 2 |
| 11×13 |
| 2 |
| 13×15 |
| 2 |
| 15×17 |
| 2 |
| 17×19 |
| 2 |
| 19×?21 |
| 1 |
| 21 |
=(
| 1 |
| 11 |
| 1 |
| 13 |
| 1 |
| 13 |
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 17 |
| 1 |
| 17 |
| 1 |
| 19 |
| 1 |
| 19 |
| 1 |
| 21 |
| 1 |
| 21 |
=
| 1 |
| 11 |
| 1 |
| 13 |
| 1 |
| 13 |
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 17 |
| 1 |
| 17 |
| 1 |
| 19 |
| 1 |
| 19 |
| 1 |
| 21 |
| 1 |
| 21 |
=
| 1 |
| 11 |
| 1 |
| 21 |
| 1 |
| 21 |
=
| 1 |
| 11 |
练习册系列答案
相关题目