(1) How many people joined the math group and the Chinese group at the same time?
(2) How many people only join the math group?
(3) How many people only join the language group?
The fruit shop bought four kinds of fruits yesterday and four kinds of fruits today. How many kinds of fruits can I buy in two days?
3. How many different organizational schemes are there to choose two students from Xiaoming, Xiao Qiang and Kobayashi to participate in the school chess competition?
4. Notes with 1 yuan, 5 cents, 2 cents and 1 corner. How many different ways did Li Can Yi kill them both? Please show it.
Mathematical wide angle
Fill in the blanks
1、○+○+○+△+△= 14,△= ○+○,
○= ( ), △= ( ) 。
2. According to the following three formulas, find out the number represented by each graph.
○+□=9 1 △+□=63 △+○=46
○=( ) △=( ) □=( )
The school organizes cultural performances. Dongdong's seat number is left seven, and the right number is 10. There are () seats in this row.
To celebrate June 1 day, the children lined up in a square flower queue. No matter from the front, from the back, or from left to right, Lili ranks fifth, and there are () children in the flower team.
5. The students form a phalanx to dance in a group dance. No matter from front to back or from left to right, Zhao Ying is the fourth. There are () students dancing in a group.
6.3 (5) Class students participated in two extracurricular interest groups, namely, music group with 32 students and art group with 30 students, both of which were 10. There are () students in Class Three (5).
Class 7.3 (1) has 32 subscribers to journals and 30 subscribers to Chinese newspapers, both of which are 10. Everyone in the class subscribes to at least one newspaper, and there are students in Class 3 (1).
8. There are 55 people in Class 3 (1), each of whom participates in at least one of skipping rope and kicking shuttlecock. It is known that there are 36 people who jump rope and 38 people who kick shuttlecock. There are () people participating in both activities.
9.( 1) There are 62 students, 48 of whom subscribe to the primary school students' language newspaper and 52 subscribe to the small majority journal. Everyone subscribes to at least one newspaper, and () people subscribe to both newspapers.
10, try 5. The school musical instrument team enrolled 42 freshmen, of whom 25 can play the violin, 22 can play the electronic organ and 3 can't do either. There are () people in both cities.
Second, the calculation
320- 180= 30×40= 40+580= 560÷4=
95÷ 1= 480+90= 5 10÷7= 200÷4=
72÷4= 8000÷2= 102+20= 4000÷50=
125-25×2= 50×0×8= 75+25÷5=
45+55÷5= 70×(40-32)= 90÷5×3=
6×( 103-98)= 7+3×0= 5 1-4×6=
420÷2×8= 750-(70+80)= 300÷2÷5=
Third, the application problem.
There are 55 students in 1 class and 3 (6) class, 20 students participated in the school's painting competition, 12 students participated in the painting competition and calligraphy competition at the same time, and 14 students did not participate in these two competitions. How many people took part in the calligraphy competition?
2. There are 42 people in the musical instrument interest group, including 27 who can play the piano, 16 who can play the piano and guzheng, and only 1 who can't play either. How many people can play the guzheng?
3. One basket of apples equals two baskets of pears, two baskets of pears equals four baskets of cherries, and two baskets of apples equals several baskets of cherries?
4. In the third grade, 107 children went for a spring outing, 78 brought mineral water, 77 brought fruit, and everyone brought at least one thing. How many people bring both mineral water and fruit in grade three?
5. There are 35 people in our class who subscribe to Mathematics One Country, 18 people subscribe to Composition World, and 9 of them subscribe to two magazines at the same time. How many people are there in our class?
6. Math exam. Of the 36 students in the class, 265,438+0 answered the first clever question correctly, 65,438+08 answered the second clever question correctly, and everyone answered at least one question correctly. How many people did both right?
7. Team A and Team B each have 16 people. First, they play in teams of two. Finally, each team chooses one person for the final. How many games will a team play?
8. Xiao Gang, Xiao Ning and Xiao Ming solve riddles on the lanterns. Xiao Gang guessed 16, Xiao Ning guessed 12, and Xiao Ming guessed 8. Xiao Ning guessed Xiao Gang, and Xiao Ming guessed Xiao Gang five times.
(1) What is the difference between Xiao Gang and Xiao Ning?
(2) How many times did Xiao Gang and Xiao Ming guess correctly?