Question

简便运算：9.6+99.6+999.6+9999.6+99999.6=

Answer 1

(10 - 0.4) + (100 - 0.4) + (1000 - 0.4) + (10000 - 0.4) + (100000 - 0.4)
=111110 - 0.4 * 5
=111110 - 2
=111100 + 10 - 2
=111100 + 8
=111108