Question

9.9x6.6+6.3x10.2简便计算？

Answer 1

（10-0.1）x6.6+6.3x（10+0.2）
=66-0.66+63+1.26
=66+63+1.26-0.66
=129+0.6
=129.6

Answer 2

如题：
原式=6.6×（10-0.1）+6.3×（10+0.2）
=6.6×10-0.66+6.3×10+1.26
=66+63+1.26-0.66
=129+0.6
=129.6；
该题用乘法分配律简算。

Answer 3

9.9x6.6+6.3x10.2简便计算？
=65.34+64.26
=129.6
望采纳 谢谢~~

Answer 4

9.9×6.6+3.3x10.2怎么简便计算？

=65.34+3.3*10.2
=33.66+65.34
=99

Answer 5

9.9×6.6+6.3×10.2=10×6.6－0.1×6.6+6.3×10+6.3×0.2=66－0.66+63+1.26=66+63+1.26－0.66=129+0.6=129.6