题目内容
| 脱式计算. 172-32×5 | 72÷24+36 | 24×(524-489) | 450÷(18-9) |
(1)172-32×5,
=172-160,
=12;
(2)72÷24+36,
=3+36,
=39;
(3)24×(524-489),
=24×35,
=840;
(4)450÷(18-9),
=450÷9,
=50.
=172-160,
=12;
(2)72÷24+36,
=3+36,
=39;
(3)24×(524-489),
=24×35,
=840;
(4)450÷(18-9),
=450÷9,
=50.
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