题目内容
| 6k×5上3×5三k×131 | 5×5×53 | 三三×三+6 | (713+233)×上. |
(1)69×n80×n49×131,
=40020×n49×131,
=21970980×131,
=2878198380;
(2)n×n×n0,
=2n×n0,
=12n0;
(3)44×4+6,
=176+6,
=182;
(4)(710+230)×8,
=940×8,
=7n20.
=40020×n49×131,
=21970980×131,
=2878198380;
(2)n×n×n0,
=2n×n0,
=12n0;
(3)44×4+6,
=176+6,
=182;
(4)(710+230)×8,
=940×8,
=7n20.
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