题目内容
| 看谁算得准(能简算要简算). (
| 41×9.9+4.1. |
(1)(
+
)×8+
,
=
×8+
×8+
,
=5+(
+
),
=5+1,
=6;
(2)41×9.9+4.1,
=4.1×99+4.1,
=4.1×(99+1),
=4.1×100,
=410.
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=
| 5 |
| 8 |
| 2 |
| 27 |
| 11 |
| 27 |
=5+(
| 16 |
| 27 |
| 11 |
| 27 |
=5+1,
=6;
(2)41×9.9+4.1,
=4.1×99+4.1,
=4.1×(99+1),
=4.1×100,
=410.
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