Question

9.9✖️5.2简算？

Answer 1

简便计算过程如下
9.9x5.2
=（10-0.1）x5.2
=10x5.2-0.1x5.2
=52-0.52
=51.48
望采纳

Answer 2

简便运算是把9.9改为 10-0.1
再用乘法分配律计算
9.9x5.2
=(10-0.1x5.2)
=10x5.2-0.1x5.2
=52-0.52
=51.48

Answer 3

5.2*9.9=5.2*(10-0.1)=5.2*10-5.2*0.1=52-0.52=51.48

Answer 4

9.9X5.2
=(10一0.1)Ⅹ5.2
=52一0.52
=51.48

Answer 5

9.8x5.2
＝（10-0.2）x5.2
＝10x5.2一5.2x0.2
＝52-1.04
＝50.96