神机妙算细又巧!(有简算要简算)88×125 ( 1 15 + 2 17 )×15×17 64...
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发布时间:2024-09-25 14:32
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热心网友
时间:2024-10-02 02:33
(1)88×125
=11×(8×125),
=11×1000,
=11000;
(2)( 1 15 + 2 17 )×15×17
= 1 15 ×15×17+ 2 17 ×17×15,
=17+30,
=47;
(3)64×3.75+3.75×36
=(64+36)×3.75,
=100×3.75,
=375;
(4)36÷( 5 6 - 1 3 )×3
=36÷ 1 2 ×3,
=54.
热心网友
时间:2024-10-02 02:41
(1)88×125
=11×(8×125),
=11×1000,
=11000;
(2)( 1 15 + 2 17 )×15×17
= 1 15 ×15×17+ 2 17 ×17×15,
=17+30,
=47;
(3)64×3.75+3.75×36
=(64+36)×3.75,
=100×3.75,
=375;
(4)36÷( 5 6 - 1 3 )×3
=36÷ 1 2 ×3,
=54.