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53x99x25巧算算式

53×(100-1)×25 =(5300-53)×25 =5247×25 =131175

25x99x25 =25x(99+1) =25x100 =2500

25.8×(99+1)=2580 运用乘法分配律,不懂再问

25x99x25 =25x25x99 =625x100-625 =62500-625 =62500-600-25 =61975

1. 14x99+14 =14×(99+1) =140 2. 25x32 =25×4×8 =100×8 =800 3. 40x25x35x20 =40×25×700 =1000×700 =700000

=40+2*(19+21+23+25.........+99)/(19*21*23*25......99)

可以破解的,只要一个电脑可以播放,就可以实现任何电脑播放。

33*99 =33*(100-1) 44*25 =11*4*25 55*27+55*72+55 =55*(27+72+1)

125乘以25,可写成125乘以100,再除以4. 36乘以99,可以写成36乘以100,再减去36. 45乘以101,可以写成45乘以100,在加上45. 26乘以15,再加上26乘以85, 可以写成26乘以(15+85),也就是 26乘以100.

98x42 =100x42-2x42 =4200-84 =4116 25x24 =25x4x6 =600 104x25 =100x25+4x25 =2500+100 =2600 78x101-78 =78x(101-1) =78x100 =7800 99x99+99 =99x(99+1) =99x100 =9900 39x(200+1) =39x200+39x1 =7800+39 =7839

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