题目内容
简便运算
| 102×32+102×67+102 | 15.91-7.45-6.55. |
(1)102×32+102×67+102,
=102×(32+67+1),
=102×100,
=10200;
(2)15.91-7.45-6.55,
=15.91-(7.45+6.55),
=15.91-14,
=1.91.
=102×(32+67+1),
=102×100,
=10200;
(2)15.91-7.45-6.55,
=15.91-(7.45+6.55),
=15.91-14,
=1.91.
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