题目内容
| 简便计算. (1)9.26-(4.38+2.26) | (2)52×76+47×76+76 | (3)
|
(1)9.26-(4.38+2.26),
=9.26-(2.26+4.38),
=9.26-2.26-4.38,
=7-4.38,
=2.62;
(2)52×76+47×76+76,
=(52+47+1)×76,
=100×76,
=7600;
(3)
x99,
=
x(97+2),
=
x97+
x2,
=29+
,
=29
.
=9.26-(2.26+4.38),
=9.26-2.26-4.38,
=7-4.38,
=2.62;
(2)52×76+47×76+76,
=(52+47+1)×76,
=100×76,
=7600;
(3)
| 29 |
| 97 |
=
| 29 |
| 97 |
=
| 29 |
| 97 |
| 29 |
| 97 |
=29+
| 58 |
| 97 |
=29
| 58 |
| 97 |
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