题目内容
用简便方法计算下面各题.
23.5-(23.5-9.36)
12.4×1.25-4.4+125%
7.5×25
+1.5×25.75+25.75.
23.5-(23.5-9.36)
12.4×1.25-4.4+125%
7.5×25
| 3 |
| 4 |
(1)23.5-(23.5-9.36),
=23.5-23.5+9.36,
=0+9.36,
=9.36;
(2)12.4×1.25-4.4+125%,
=(12.4-4.4)×1.25,
=8×1.25,
=10;
(3)7.5×25
+1.5×25.75+25.75,
=(7.5+1.5+1)×25.75,
=10×25.75,
=257.5.
=23.5-23.5+9.36,
=0+9.36,
=9.36;
(2)12.4×1.25-4.4+125%,
=(12.4-4.4)×1.25,
=8×1.25,
=10;
(3)7.5×25
| 3 |
| 4 |
=(7.5+1.5+1)×25.75,
=10×25.75,
=257.5.
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