唔明點解係呢個答案 - 尾數係 2.5

2011-04-11 8:01 pm

Each pen costs $6.5 . How many pens can be bought for $100 ? How much remains ?

= 100 除 6.5
= 15remains2.5
= 2.5

點解尾數係 = 2.5 ( 點計架 )

回答 (1)

2011-04-12 10:25 pm

✔ 最佳答案

6.5x15=97.5
100-97.5=2.5（就系咁計）

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