Please help with a few practical problems of multiplication and division in the fifth grade of eleme

1. More than 900 nature reserves have been established in China, of which 50 11 are provincial and municipal nature reserves, and about 22 43 are provincial and municipal nature reserves

How many national nature reserves are there?

2. Fifth grade students subscribe to the "Primary School Mathematics Newspaper". Five (1) classes are required to order the number of copies.

103 is equal to 4 1 of five (2) classes. Five (1) class ordered 20 copies, five (2) class how many copies?

1) Grandpa raised 12 white rabbits, which were 3 1 of gray rabbits.

How many grey rabbits does grandpa have?

2) Grandpa raised 12 white rabbits, and the gray rabbit was 31 of the white rabbit.

How many grey rabbits does grandpa have?

4. Zhao Ming read the book "Camel Xiangzi", and read 88 pages on the first day, which happened to be this book.

28 11, the second day I read 8 3 of the book, and the third day I finished reading it. How many pages were read on the third day?

5. The body length of a Siberian tiger is 180 cm, and the tail length is 40 cm less than the body length of 9 7. The tail of this tiger.

How many centimeters is long?

6. According to survey statistics, the total number of wild red-crowned cranes in the world is only about 1,200, and wild red-crowned cranes in other countries.

It accounts for about 5 2 of the world's total, and the rest is in our country. How many wild red-crowned cranes are there in our country?

7. The store shipped 240 bicycles, 3 1 of the total number sold on the first day, and the number of bicycles sold on the second day was equivalent to the first.

8 of the day 7. How many cars were sold the next day?

1. The engineering team repairs a kilometer of highway, starts to repair an average of kilometers per day, and after 5 days, the remaining road will be repaired in 7 days, how many kilometers will be repaired per day on average?

2. The engineering team repairs a kilometer of road, and repairs an average of kilometers per day for the first 5 days, in order to speed up the progress, an average of more kilometers per day in the future, and how many days will the remaining roads be repaired?

3. The engineering team repaired a kilometer of highway, and the original plan was to repair kilometers every day, but in fact it repaired kilometers more than planned every day, so that it could be completed a few days earlier than planned?

1).Xiao Hua typed 600 Chinese characters when he was a child, according to this calculation, how many Chinese characters can he type in 4 hours?

2).It takes 10 minutes for Mr. Wang to ride an electric car from his home to school, and he knows that his home is 500,000 meters away from the school.

1. (1) Grandpa raised 12 white rabbits, which were gray rabbits. How many grey rabbits does grandpa have?

2) Grandpa raised 12 white rabbits, and the gray rabbit was a white rabbit. How many grey rabbits does grandpa have?

3) Grandpa raised 12 white rabbits, more than gray rabbits. How many grey rabbits does grandpa have?

4) Grandpa raised 12 white rabbits, and the gray rabbit was more than the white rabbit. How many grey rabbits does grandpa have?

5) Grandpa raised 12 white rabbits, which is less than gray rabbits. How many grey rabbits does grandpa have?

6) Grandpa raised 12 white rabbits, and there were fewer gray rabbits than white rabbits. How many grey rabbits does grandpa have?

2. Zhao Ming read the book "Camel Xiangzi", and read 88 pages on the first day, which happened to be the book, and read the book on the second day, and finished it on the third day. How many pages were read on the third day?

3. Young Pioneers collect animal and plant specimens. We boys collected 95 specimens, accounting for the total number of specimens, how many specimens did we girls collect?

4. The school has 320 general reading materials, accounting for 25 of the total books, how many books are there in the library? Storybooks make up 34 of all books, how many storybooks are there?

5. There are 120 pear trees in the orchard, 98 of the apple trees are pear trees, and 59 of the peach trees are pear trees. How many apple trees and peach trees are there?

6. A rail of 34 meters weighs 120 tons, how many tons does a 50-meter rail weigh?

7. The original price of a suit is 800 yuan, how much is the current price after a 20% discount? A set of sportswear is sold for 240 yuan after a six-fold discount, how much is the original price?

8. After a steel creep is cut off 8 meters, the remaining part is more than 2 meters longer than the original length, how many meters is the original length of this steel bar?

9. Fifth grade students subscribe to the "Primary School Mathematics Newspaper". The number of copies for five (1) classes is equal to that of five (2) classes. Five (1) class ordered 20 copies, five (2) class how many copies?

Intelligence competition: A, B, C, D four numbers, A number is the sum of the other three numbers, B number is the sum of the other three numbers, C number is the sum of the other three numbers, known D number is 260, what is the sum of the four numbers? What is the number of nails?

It's more than ten o'clock, Taiwan Street, last time I said it, chirp Who are you, yours? Are you the same,。。 Hmmm (

I thought to myself, it's not so simple, it's embarrassing!

I hope the information I provided was helpful to you, there are 30 questions with answers, you can jump on your own: