Question

8.64×525怎么简便运算？

Answer 1

由题目可得式子8.64*525，在这个式子里只有乘法运算，通过将8.64拆开成(80.64)，525＝5*105。8.64*525＝(8+0.64)5*105＝(8*5+0.64*5)*105＝(40+3.2)*105＝105*40+0.1*2³*2²*105＝4200+0.1*8*420＝4200+42*8＝4200+336＝4536

Answer 2

8.64*525=8.64*（500+25）=8.64*500+8.64*25=8.64*500+8.64*5*5=4320+43.2*5=4320+216=4536

Answer 3

8.64x525
＝（10-1.36）x525
＝10x525-1.36x525
＝5250-714
＝4536
最后结果是4536。

Answer 4

本题的简便计算方法如下：8.64x525
=8.64x(500+25)
=8.64x500+2.16x4x25
=8.64x1000/2+2.16x100
=4320+216
=4536

Answer 5

利用乘法结合律巧算
8.64x525
＝4.32x2x525
＝2.16x2x2x525
＝1.08x2x4x525
＝1.08x2x2100
＝1.08x4200
＝4536