题目内容
| 递等式计算: (15+25)×8 | (49+21)×(84÷12) | 205-135÷9. |
(1)(15+25)×8,
=40×8,
=320;
(2)(49+21)×(84÷12),
=70×7,
=490;
(3)205-135÷9,
=205-15,
=190.
=40×8,
=320;
(2)(49+21)×(84÷12),
=70×7,
=490;
(3)205-135÷9,
=205-15,
=190.
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| 递等式计算: (15+25)×8 | (49+21)×(84÷12) | 205-135÷9. |