题目内容
| 脱式计算. 12.7+15.6-9.77 | 36×(265-187) | 620÷4+321. |
(1)12.7+15.6-9.77,
=28.3-9.77,
=18.53;
(2)36×(265-187),
=36×78,
=2808;
(3)620÷4+321,
=155+321,
=476.
=28.3-9.77,
=18.53;
(2)36×(265-187),
=36×78,
=2808;
(3)620÷4+321,
=155+321,
=476.
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