题目内容
计算,能简便的要简便
(1)3-
| (2)
| (3)36×(
|
1)3-
-
,
=3-(
+
),
=3-1,
=2;
(2)
÷
+
÷
,
=(
+
)×18,
=
×18,
=20;
(3)36×(
+
)÷
.
=(36×
+36×
)÷
,
=(28+22
)÷
,
=50
×
,
=
×
,
=
,
=8
.
| 3 |
| 8 |
| 5 |
| 8 |
=3-(
| 3 |
| 8 |
| 5 |
| 8 |
=3-1,
=2;
(2)
| 5 |
| 9 |
| 1 |
| 18 |
| 5 |
| 9 |
| 1 |
| 18 |
=(
| 5 |
| 9 |
| 5 |
| 9 |
=
| 10 |
| 9 |
=20;
(3)36×(
| 7 |
| 9 |
| 5 |
| 8 |
| 29 |
| 5 |
=(36×
| 7 |
| 9 |
| 5 |
| 8 |
| 29 |
| 5 |
=(28+22
| 1 |
| 2 |
| 29 |
| 5 |
=50
| 1 |
| 2 |
| 5 |
| 29 |
=
| 101 |
| 2 |
| 5 |
| 29 |
=
| 505 |
| 58 |
=8
| 41 |
| 58 |
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