Question 2: The child is in the sixth grade. Is it necessary to learn Olympic Mathematics in primary schools? You can learn it. After all, mathematics in primary and junior high schools is too simple. For the future college entrance examination
Question 3: Do you need to learn Olympic Mathematics in the sixth grade of primary school? Personally, I think it is necessary. It should be studied systematically. I'm a senior three student, and I started to learn Olympic Mathematics in Grade One. I have to say, it is of great help to the later study, not to mention that the content of primary school study is so simple that it doesn't take time to learn more obscure things. It is very helpful for the cultivation of thinking, which is one of the reasons why many parents let their children learn Olympic Mathematics. However, by the sixth grade, I think it's a little late to start. If Xiaoshengchu still needs to consider exporting to school, then don't study. If you have the spare capacity to study and the economy allows you to sign up for an Olympic math class, it will be as easy as playing.
Question 4: My child's math score is 85, grade 6. Is it suitable for learning Olympic Mathematics? Depends on whether your child wants to. Theoretically, as long as your children love mathematics, the olympiad is not a problem. If he is not particularly interested, it will be difficult to learn well.
Question 5: The first volume of the sixth grade has Olympic math problems, with a maximum of 100. If it is difficult, there must be an answer. Try not to use equations, thanks 1.
Party A and Party B have deposited RMB 9,600 in the bank. If you withdraw 40% of your own deposit, you will withdraw 120 yuan from Party A's deposit and give it to Party B. At this time, both of them have equal money and demand a deposit from B.
answer
After taking 40%, the deposit is
9600× (1-40%) = 5760 (yuan)
At this time, B has: 5760 ÷ 2+ 120 = 3000 yuan. It turns out that B has: 3000 ÷ (1-40%) = 5000 yuan.
2、
Milk candy and chocolate candy are mixed into a pile of candy. If 10 milk sugar is added, chocolate sugar accounts for 60% of the total. After adding 30 chocolate candy, chocolate candy accounts for 75% of the total, so how many milk candy are there in the original mixed candy? How many chocolates are there? answer
Add 10 toffee, and chocolate accounts for 60%, which means that toffee accounts for 40% and chocolate is 60/40= 1 of toffee. quintic
Add 30 pieces of chocolate, chocolate accounts for 75%, toffee accounts for 25%, and chocolate is three times that of toffee, that is, 3-1.5 times =1.5 times, that is to say, 30 pieces of chocolate accounts for1.5 times of toffee = 30/1.
Chocolate = 1.5*20=30 toffee =20- 10= 10.
3、
Xiaoming and Xiao Liang each have some glass balls. Xiao Ming said, "Your balls are less than mine 1/4!" Xiao Liang said, "If you can give me your 1/6, I will have two more than you." How many original glass balls does Xiaoming have? answer
Xiao Ming said, "Your balls are less than mine 1/4!" "The number of balls that want to be Xiao Ming is 4, and the number of balls that are bright is 3.
4 * 1/6 = 2/3 (Xiaoming wants to give Liang Xiao 2/3 glass balls). Xiao Ming has 4-2/3 = 3 and 1/3 (copies). Liang Xiao has 3+2/3 = 3 and 2/3 (copies).
This extra 1/3 corresponds to 2, so one copy contains: 3 * 2 = 6 (pieces) of Xiaoming's original four glass balls. Knowing that each glass ball is 6, Xiaoming's original glass ball is 4 * 6 = 24 (pieces).
4、
The ratio of qualified students to unqualified students in Yucai Primary School is 3: 5, and then 60 students meet the standard, which is
The number of people who meet the standard is 9/ 1 1 of those who do not meet the standard. How many students are there in Yucai Primary School?
answer
The original number of people who reached the standard accounted for 3 ÷ (3+5) = 3/8.
At present, 9/11÷ (1+9/1) = 9/20 Yucai Primary School has students.
60 ÷ (9/20-3/8) = 800 people
The school organized a spring outing. Students leave school in the afternoon 1, take a flat road, climb a mountain road and return to school at 7 pm. It is known that their walking speed is: 4Km/ h on the flat road, 3Km/ h on the mountain road, 6Km/ h on the downhill road and 2.5 hours on the return trip. Q: How many roads did they walk?
Solution: Spring outing * * * Time: 7: 00- 1: 00 = 6 (hours) Time: 6-2.5 = 3.5 (hours)
Multipurpose uphill: 3.5-2.5 = 1 (hour)
Mountain road: (6-3) × 1 ÷ (3 ÷ 6) = 6 (km) Downhill time: 6 ÷ 6 = 1 (hour).
Horizontal road: (2.5- 1) × 4 = 6 (km) One-way walk: 6+6 = 12 (km) * * walk: 12 × 2 = 24 (km) A: They * * walk 24 km.
6. A bookstore offers discounts to customers. Anyone who buys more than 100 copies of the same book will be given a discount of 90% of the book price. A school went to the bookstore and bought two kinds of books, A and B, among which the number of books in B was 3/5 of that in A, and only A got a 10% discount. Among them, buying books costs twice as much as buying books. Given that each book in Class B is 1.5 yuan, what is the price of each book in Class A?
A has more than 65,438+000 copies, and B has less than 65,438+000 copies. The ratio of the total amount of money spent by A and B is 2: 65,438+0.
Then, before the discount, the proportion of the total amount of money with Party B is: (2 ÷ 0.9): 1 = 20: 9, and the share ratio of Party A and Party B is 5:3.
The unit price ratio of Party A and Party B is (20 ÷ 5): (9 ÷ 3) = 4: 3. Before the discount, each copy of Party A: 1.5×4/3=2 yuan.
7. The original female students of the school track and field team accounted for 1/3 of the total number of track and field teams, and later six female students participated in track and field ... >; & gt
Question 6: Primary school olympiad (sixth grade) 10,
Team length = 227× 5-450 = 685m.
Number of vehicles = (685-10) ÷ (10+5)+1= 45+1= 46 (vehicles)
Question 7: What should pupils learn in grade 1-6? Before grade 3, it was basically the application of exchange law, association law and distribution law, mainly to examine the understanding and application of concepts and not to make mistakes.
The fourth level involves scores, figures (such as how many triangles there are) and finding rules.
The fifth grade equation inequality, common chickens and rabbits in the same cage, sheep eating grass and so on.
Sixth grade strategy, optimal solution and so on.