A pocket calculator only works to eight decimal places.

　　袖珍計算器只能計算到小數點后8位數。

　　The students had a grasp of decimals, percentages and fractions.

　　學生們掌握了小數、百分數和分數。

　　Britain converted to decimal currency on February 15th, 1971.

　　英國于1971年2月15日改用十進位幣制。

　　Difficulties were caused when Britain converted to a decimal money system.

　　英國改用十進幣制后，出現了很多麻煩。

　　The figure is account to two decimal places.

　　這個數字精確到小數點后兩位。