题目内容
用简便方法计算.
| 59+134+41 | 36×25 | 45×9×4. |
(1)59+134+41,
=(59+41)+134,
=100+134,
=234;
(2)36×25,
=9×4×25,
=9×(4×25),
=9×100,
=900;
(3)45×9×4,
=45×4×9,
=180×9,
=1620.
=(59+41)+134,
=100+134,
=234;
(2)36×25,
=9×4×25,
=9×(4×25),
=9×100,
=900;
(3)45×9×4,
=45×4×9,
=180×9,
=1620.
练习册系列答案
相关题目