问题
填空题
一把尺子长度是22.45cm,精确到0.1是______cm,精确到个位是______cm,精确到十位是______.
答案
22.45cm,精确到0.1是22.5cm,精确到个位是22cm,精确到十位是2×101,
故答案为22.5,22,2×101.
一把尺子长度是22.45cm,精确到0.1是______cm,精确到个位是______cm,精确到十位是______.
22.45cm,精确到0.1是22.5cm,精确到个位是22cm,精确到十位是2×101,
故答案为22.5,22,2×101.