8.9×99=8.9×100﹣1. .(判断对错)
0.85保留三位小数约等于0.860..(判断对错)
近似数6.2与近似数6.20完全相同..(判断对错)
5.99保留整数是6..(判断对错)
0.996凑整到百分位约是1.00..(判断对错)
将9.9965保留两位小数是10.(判断对错)