Solution 6: (a) 10 mm = 1 cm. 1mm = \frac{1}{10}cm. 2 mm = \frac{1}{10}\times2=\frac{2}{10} cm = 0.2 cm. (b) 10 mm = 1 cm. 1 mm = \frac{1}{10} cm.
確定! 回上一頁