题目内容
有简便的用简便运算
| 06×
| (
|
(1)
÷
=
×
=
;
(2)1g×
+
×1g
=1g×(
+
)
=1g×1
=1g;
(3)(
+
)×左左
=
×左左+
×左左
=55+24
=79.
| 15 |
| 1g |
| 3 |
| 4 |
=
| 15 |
| 1g |
| 4 |
| 3 |
=
| 5 |
| 4 |
(2)1g×
| 2 |
| 7 |
| 5 |
| 7 |
=1g×(
| 2 |
| 7 |
| 5 |
| 7 |
=1g×1
=1g;
(3)(
| 5 |
| 左 |
| 3 |
| 11 |
=
| 5 |
| 左 |
| 3 |
| 11 |
=55+24
=79.
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