## There are 100 pages in a story book. Xiao Hong read 1 / 4 of the book and 1 / 6 of the book the next day. How many parts of the book are left?

Remaining proportion

=1-1 / 4-1 / 6

=1-3 / 12-2 / 12

=7 out of 12

Xiao Ming read a 200 page story book. On the first day, he read 1 / 20 of the whole book. On the second day, he read 1 / 10 of the whole book. How many parts are left?

17 out of 20

Xiao Ming read one eighth of a story book every day. How many times did he read this one in six days? How many parts are left?

Xiao Ming reads one eighth of this story book every day,

Read this book in 6 days: 1 / 8x6 = 3 / 4

Remaining: 1-3 / 4 = 1 / 4

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