Mathematical olympiad in the second grade last semester 1
1. There will be flowers on display on the anniversary. There are five rows of flowers in one row, and the last row has two more pots than the previous one. There are 10 pots in the last row. What about a row of potted flowers?
2.20 monks are divided into 20 steamed buns, the big monk is divided into 3 steamed buns, and the young monk is divided into 1 steamed bun, which is just the end. Ask the big monk and the little monk each ()?
3. A cat eats a mouse and finishes it in 5 minutes; Five cats eat five mice of the same size at the same time. How long will it take () minutes to complete?
4. On Children's Day, my mother bought three different gifts for Xiaohua, Xiaoming and Xiao, namely: Rubik's cube, jigsaw puzzle and doll. Now we know that Xiaogang didn't take the puzzle, and Xiaoming didn't take the doll and the puzzle. Think about it. What gift did each of them bring?
Grandma keeps 20 chickens in five cages, and the number of chickens in each cage is different. How did Grandma put 20 chickens in five cages?
6. Yao Ming spends half his time doing homework, half his time doing Chinese homework, half his time doing math homework and five minutes studying. How long does it take Yao Ming to finish all his homework?
7. The small conference room in the school has four seats in the first row. From now on, each row has two more seats than the front row, and the last row 18 seats. How many seats are there in this conference room?
Mathematics olympiad problem 2 in the second grade last semester
1, put 7,8,9, 10, 1 1, 12 in the following brackets to make the equation hold.
( )+( )=( )+( )=( )+( )
2. Mom bought some sugar,/kloc-more than 0/0, less than 20. Divide them equally, with the same amount of each. Mom bought a candy.
3. There are 100 athletes who take part in long-distance running, and they are labeled with different numbers ranging from 1 to 100. Numbers? Numbers? 6? * * * appears () times.
4, 29 pens, 3 for each child, the remaining 2, distributed to () children.
A row of trees were planted on the path. The distance between every two trees is 8 meters, and the distance from the first tree to the eighth tree is () meters.
6. There are nine ping-pong balls with the same shape, one of which is lighter. You can find out by weighing it at least () times.
7. Dad bought some apples, ate seven and left twice as many. Dad bought () apples.
Last semester, the second grade olympiad math problem 3
I. Oral calculation (5 points)
2? 3? 7= 63? (3? 3)= 54? 6=
16+4- 15= 72- 12-30= 5? 4+4=
6? 6-6= 60+7+30= 2? 5+49=
9 1- 14-36=
Fill in the blanks (15)
1. When solving the application problems of two consecutive problems, you can take the calculation result of the previous problem as () and then calculate the number of the second problem.
2. The difference between the largest two digits and the smallest three digits is ().
3.A number is less than B number 15, B number is 28, and the sum of A number and B number is ().
4. Objects with different lengths can use () or () as the unit.
5.2m is () cm longer than 120cm.
6. 16+ 16+ 16+8=( )? ( )。
7. Known: ○+□= 15, ○ □ =1. Then ○ = (), □ = ().
8. Some pens are distributed to eight students on average. Just finished writing, there are at least () pens.
9. If you subtract 7 from 63 and the result of subtracting () times is 0, use formula ().
10. Determine a vertex and draw an angle of (). Both sides of an angle are extended, and the size of this angle ().
3. judge (fight? , wrong number? *** 10)
1. In the multiplication formula, the product is not necessarily greater than each factor. ( )
After one corner of the square table is cut off, there are still three corners left in this square table. ( )
3. 9 times of a number. Every time this number increases 1, the product increases by 9. ( )。
4. 13 students make paper flowers. Every four students use one piece of paper, and at least three pieces of paper are needed. ( )
5.36 is 9 times that of 4, that is, there are 4 9s in 36. ( )。
2. What can I put in the brackets? (4 points)
8? ( )﹤7 1 47﹥9? ( ) ( )? 7﹤60 23﹥4? ( )
Six. Column calculation (16 points)
1. One factor is 8, and the other factor is 27 less than 36. What is the product?
How many 9s are there in 2? 54?
What's eight times three? 6?
The dividend is 24 and the divisor is 3. What is the quotient?
Seven. Application questions (7 points for each small question, 28 points for * * *)
1. One hand has five fingers, so how many fingers do two people have * * *?
2. 4 pots of yellow flowers and 5 pots of red flowers, each with more than 6 flowers. How many flowers have a * * *?
3. There are 28 boys and 24 girls in Class Two (1). Class two (2) has three more people than Class two (1). How many people are there in Class Two (2)?