题目内容
简便计算.
3.72-(1.72+1.3)49×101
-
+
-
.
3.72-(1.72+1.3)49×101
| 1 |
| 14 |
| 9 |
| 10 |
| 13 |
| 14 |
| 1 |
| 10 |
(1)3.72-(1.72+1.3),
=(3.72-1.72)-1.3,
=2-1.3,
=0.7;
(2)49×101,
=49×(100+1),
=4900+49,
=4949;
(3)
-
+
-
,
=(
+
)-(
+
),
=1-1,
=0.
=(3.72-1.72)-1.3,
=2-1.3,
=0.7;
(2)49×101,
=49×(100+1),
=4900+49,
=4949;
(3)
| 1 |
| 14 |
| 9 |
| 10 |
| 13 |
| 14 |
| 1 |
| 10 |
=(
| 1 |
| 14 |
| 13 |
| 14 |
| 9 |
| 10 |
| 1 |
| 10 |
=1-1,
=0.
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