要求简算``1.9+19.9+199.9+1999.9+0.
问题描述:
要求简算``1.9+19.9+199.9+1999.9+0.
答
1.9+0.1+19.9+0.1+199.9+0.1+1999.9+0.1=2222
要求简算``1.9+19.9+199.9+1999.9+0.
1.9+0.1+19.9+0.1+199.9+0.1+1999.9+0.1=2222