题目内容
用简便方法进行计算
| 0.8×7.3×0.125 | 2.8×3.5+3.5×18.2-3.5 | 101×0.99. |
(1)0.8×7.3×0.125,
=0.8×0.125×7.3,
=0.1×7.3,
=0.73;
(2)2.8×3.5+3.5×18.2-3.5,
=(2.8+18.2-1)×3.5,
=20×3.5,
=70;
(3)101×0.99,
=(100+1)×0.99,
=99+0.99,
=99.99.
=0.8×0.125×7.3,
=0.1×7.3,
=0.73;
(2)2.8×3.5+3.5×18.2-3.5,
=(2.8+18.2-1)×3.5,
=20×3.5,
=70;
(3)101×0.99,
=(100+1)×0.99,
=99+0.99,
=99.99.
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