Xiao Xiao was reading a 150-page book. She had already read two-fifths of the book. How many pages were left?

2024-09-10 12:17

1 answer

2024-09-10 13:41

If Xiaoxiao had already read two-fifths of a 150-page book, then she had already read 150 × 2/5 = 60 pages. The remaining pages were 150 - 60 = 90 pages. Hence, Xiao Xiao still had 90 pages to read.

Xiao Xiao was reading a 150-page book. She had read two-fifths of the book in four days. How many pages were left?

1 answer

2024-09-18 15:36

Xiao Xiao read a 150-page book for four days and read two-fifths of the book. Xiaoxiao reads 1/5/4 = 1/10 of the book every day The book had 150 pages, so Xiaoxiao still needed to read pages 1 - 1/5 - 1/10 = 4/5. And because Xiaoxiao had already read two-fifths of the book, there were still four to five pages left. Hence, Xiao Xiao still needed to read 2/5 pages.

Xiao Ming was reading a 200-page storybook. He had already read two-fifths of the book and had 10 more pages. How many pages were left?

1 answer

2024-09-18 15:27

Xiao Ming had already read two-fifths of a 200-page storybook, which was 10 pages more. 200 pages × 2/5 + 10 pages = 40 pages The remaining pages were: 200 - 40 pages = 160 pages Therefore, Little Ming still had 160 pages left.

Xiao Hong had already read 40 pages of the book, which was exactly two-fifths of the book. How many pages were left?

1 answer

2024-09-18 15:45

If Xiao Hong had already read 40 pages of a book, which was two-fifths of the book, then Xiao Hong had already read 20% or 0.2 times the book. How many pages are there in the book? You can divide the number of pages by the number of pages in the book: (100% - 02) / 100% = 90% Therefore, Little Red only had 10 pages left.

Xiao Ming is reading a 150-page storybook. He has already read two-fifths of the book. How many pages are left?

1 answer

2024-09-10 12:34

Xiao Ming had already read two-fifths of a 150-page storybook, so he had already read 150 × 2/5 = 60 pages. Therefore, there were still 150 - 60 = 90 pages left in the storybook.

Little Ming was reading a 30-page book, and he had already read two-fifths of it. How many pages were left?

1 answer

2024-09-18 15:33

Xiao Ming had already read two-fifths of a 30-page book, so there were 30 - 2/5 = 30 - 04 = 296 pages left. Therefore, there were 296 pages left in the book.

Xiao Ming has a book with a total of 240 pages. He has already read two-fifths of the book. How many pages are left?]

1 answer

2024-09-18 15:27

Xiao Ming had a book with a total of 240 pages and had already read two-fifths of the entire book, so he had already read 240 × 2/5 = 96 pages. Therefore, there were still 240 - 96 = 144 pages left.

Zhang Bin was reading a book. He had already read 39 pages, and there were still two-fifths left. How many pages were there in this book?

1 answer

2024-09-18 15:22

This book had: 39 + 2/5 = 39 + 06 = 406 pages. Because the number of pages in a book must be an entire number, the decimals needed to be rounded to the nearest whole number. Therefore, the book had a total of 40 pages.

Xiao Lin was reading a book. He had already read 180 pages, and there were still 5/6 left. How many pages is this book?

1 answer

2024-09-15 14:33

This book had a total of 180 + 5/6 = 195 pages.

Xiao Xiao was reading a book. On the first day, she had read three-eighths of the book. On the second day, she had read the remaining two-fifths. There were still 36 pages left. She asked if there were any pages in the book.

1 answer

2024-09-10 18:51

The book had a total of 36 pages. On the first day, he read three-eighths of the book, which was 36 pages/8 = 4 pages/day. The next day, he read the remaining two-fifths, which was 36 pages/(2 + 5) = 4 pages/day. Since there were 36 pages left, the book had a total of 36 pages + 4 pages/day = 36 pages + 8 pages/day = 44 pages. Therefore, this book had a total of 44 pages.

A book had 170 pages. Xiaowen had read two-fifths of it. How many pages were left?

1 answer

2024-09-03 19:47

Xiaowen had read two-fifths of the book, which meant that Xiaowen had read 2/5 * 170 = 48 pages. Therefore, there were still 170 - 48 = 122 pages that he had not read.