题目内容
| 怎样简便怎样算 (
|
|
| ||||||||||||||||||||
| 3.5×72+65×7.2 | 120÷[4.5×(1-
|
|
(1)(
+
)×35,
=
×35+
×35,
=10+7,
=17;
(2)
×[
-(
-
)],
=
×[
-(
-
)],
=
×[
-
],
=
×[
-
],
=
×
,
=
;
(3)
+
×(
-
),
=
+
×(
-
),
=
+
×
,
=
+2,
=2
;
(4)3.5×72+65×7.2,
=35×7.2+65×7.2,
=(35+65)×7.2,
=100×7.2,
=720;
(5)120÷[4.5×(1-
)],
=120÷[4.5×
],
=120÷0.5,
=240;
(6)
-(
-
),
=
-
+
,
=(
+
)-
,
=1-
,
=
.
| 2 |
| 7 |
| 1 |
| 5 |
=
| 2 |
| 7 |
| 1 |
| 5 |
=10+7,
=17;
(2)
| 8 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 8 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 4 |
| 16 |
=
| 8 |
| 9 |
| 3 |
| 4 |
| 3 |
| 16 |
=
| 8 |
| 9 |
| 12 |
| 16 |
| 3 |
| 16 |
=
| 8 |
| 9 |
| 9 |
| 16 |
=
| 1 |
| 2 |
(3)
| 1 |
| 13 |
| 12 |
| 13 |
| 5 |
| 2 |
| 1 |
| 3 |
=
| 1 |
| 13 |
| 12 |
| 13 |
| 15 |
| 6 |
| 2 |
| 6 |
=
| 1 |
| 13 |
| 12 |
| 13 |
| 13 |
| 6 |
=
| 1 |
| 13 |
=2
| 1 |
| 13 |
(4)3.5×72+65×7.2,
=35×7.2+65×7.2,
=(35+65)×7.2,
=100×7.2,
=720;
(5)120÷[4.5×(1-
| 8 |
| 9 |
=120÷[4.5×
| 1 |
| 9 |
=120÷0.5,
=240;
(6)
| 11 |
| 15 |
| 3 |
| 5 |
| 4 |
| 15 |
=
| 11 |
| 15 |
| 3 |
| 5 |
| 4 |
| 15 |
=(
| 11 |
| 15 |
| 4 |
| 15 |
| 3 |
| 5 |
=1-
| 3 |
| 5 |
=
| 2 |
| 5 |
练习册系列答案
相关题目