题目内容
计算
(1)10
+5
-(1
+
)
(2)1375+480÷16×25.
(1)10
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 8 |
(2)1375+480÷16×25.
(1)10
+5
-(1
+
),
=10
+5
-1
-
,
=(10
-
)+(5
-1
),
=10+4,
=14;
(2)1375+480÷16×25,
=1375+30×25,
=1375+750,
=2125.
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 8 |
=10
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 8 |
=(10
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 2 |
=10+4,
=14;
(2)1375+480÷16×25,
=1375+30×25,
=1375+750,
=2125.
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