题目内容
用简便方法计算
| 46.5×99+46.5 | 7.96+0.49-2.96. |
①46.5×99+46.5
=46.5×(99+1)
=46.5×100
=4650;
②7.96+0.49-2.96.
=7.96-2.96+0.49
=5+0.49
=5.49.
=46.5×(99+1)
=46.5×100
=4650;
②7.96+0.49-2.96.
=7.96-2.96+0.49
=5+0.49
=5.49.
练习册系列答案
相关题目