6.5182用“四舍五入”法精确到千分位是6.518 (判断对错)
6+6+6+6+5可以改写成:65(×)
纸条长(7)厘米()
98-49=59
()
(80-9.8)×-1.32 =70.2×-1.32 =28.08-1.32 =26.76()