题目内容
简便运算
(
+
-
)÷
96×101
2.7×99+2.7×2-2.7.
(
| 2 |
| 5 |
| 1 |
| 6 |
| 4 |
| 15 |
| 1 |
| 30 |
96×101
2.7×99+2.7×2-2.7.
(1)(
+
-
)÷
,
=
×30+
×30-
×30,
=12+5-8,
=9;
(2)96×101,
=96×100+96,
=9600+96,
=9696;
(3)2.7×99+2.7×2-2.7,
=2.7×(99+2-1),
=2.7×100,
=270.
| 2 |
| 5 |
| 1 |
| 6 |
| 4 |
| 15 |
| 1 |
| 30 |
=
| 2 |
| 5 |
| 1 |
| 6 |
| 4 |
| 15 |
=12+5-8,
=9;
(2)96×101,
=96×100+96,
=9600+96,
=9696;
(3)2.7×99+2.7×2-2.7,
=2.7×(99+2-1),
=2.7×100,
=270.
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