0.9+9.9+99.9+999.9脱试计算?

2025-02-23 11:15:54
推荐回答(4个)
回答1:

0.9+9.9+99.9+999.9

=1-0.1+10-0.1+100.0.1+1000-0.1

=(1000+100+10+1)-(0.1+0.1+0.1+0.1)

=1111-0.4

=1110.6


回答2:

0.9+9.9+99.9+999.9
=1+10+100+1000-0.1×4
=1111-0.4
=1110.6

回答3:

0.9+9.9+99.9+999.9
=1+10+100+1000-0.1-0.1-0.1-0.1
=1111-0.4
=1110.6

回答4: