Mathes 文字題唔明 - 請幫忙

1. A group of workmen left after finishing 1/7 of the work . Another group
finished 2/3 of the remaining work . What fraction of the work was left to be
finished ?
一班工人做了 1/7 的工作，另一班工人做了剩余的 2/3 的工作。请问有多少工作未完成（求分数）？

先将工作分成 7 等份 >> O O O O O O O
工人做了1 份，剩 6 份。>> 口 O O O O O O
另一班工人做了剩余的 2/3 。 >> 口 # # # # O O
答案系 2/7
（sorry, 我唔识 working ）

2. Father was earning $ 4 500 a month. At the end of the year , he was give
1/2 month's bouns. How much did he earn a year ?
爸爸每月赚 $4,500。年尾，公司会给爸爸一个月o既 1/2 当作奖金。请问爸爸一年赚多少？

( $4,500 x 12 ) + ( $4,500 x 1/2 )
= $54,000 + $2,250
= $56,250

3. John had $ 48 . He spent 1/4 on food and 1/2 of the remainder on drinks.
How much was left over ?
John 有 $48，他用了 1/4 食野，再用剩余的 1/2 饮野。请问他还剩多少钱？

1/4 食野 >> $48 x 1/4 = $12
剩余 >> $48 - $12 = $36
剩余的 1/2 饮野 >> $36 x 1/2 = $18
还剩多少钱 >> $48 - $12 - $18 = $18

4. Jason has 12 sweets. He gave 1/3 to john and 1/2 of the rest to Mary.
How many sweets had he left ?
Jason 有 12 粒糖，他给John 1/3，再将剩余的 1/2 给Mary。请问他还剩多少粒糖？

给John 1/3 >> 12 x 1/3 = 4
剩余 >> 12 - 4 = 8
剩余的 1/2 给Mary >> 8 x 1/2 = 4
还剩多少粒糖 >> 12 - 4 - 4 = 4

5. The price of a fish which weight 1-1/2 kg was $ 66. How much would I pay
if I bought a smaller fish of 3/4 kg ?
用 $66 可以买到 1-1/2 kg 鱼。请问我要用多少钱才买到 3/4 kg 鱼呢？

先统一分数 >> 1-1/2 = 3/2 = 6/4
6/4 >>> $66
3/4 >>> ?
可以唔理分数 >>
6 份 >>> $66
1 份 >>> $66 / 6 = $11
3 份 >>> $11 x 3 = $33

6. There are 80 pages in the book . Jenny read half of a book in the morning
and finished of the remaining in the afternoon. How many pages did he
finish reading?
一本书有 80 页。Jenny 早上读了一半，下午在读完剩下的页数。他总共读了多少页？

早上 >> 80 x 1/2 = 40
下午 >> 80 - 40 = 40
总共读了多少页 >> 40 + 40 = 80

希望可以帮到你丫... ^^

1. A group of workmen left after finishing 1/7 of the work . Another group
finished 2/3 of the remaining work . What fraction of the work was left to be
finished ?

第1 批工人剩餘工作:

1-1/7=6/7

第2 批工人剩餘工作:

(第1 批工人剩餘工作)x(1- 2/3)

=(6/7)x1/3

=2/7