There are 1200 story books in the school, and the number of science and technology books is 3 / 8 more than that of story books. How many are there? Qianjin village paved a 480 meter stone road with stones. One third of the road was paved on the first day, and three fifth on the second day. Which day was the most paved? How many meters more? A car has traveled 3 / 8 of the whole journey from place a to place B, with 15 kilometers left in the middle. How many meters is the distance from place a to place B? According to the number of students in three classes of grade 6, the school gives the repair tasks of 83 books to each class. There are 52 students in class 1, 56 students in class 2 and 58 students in class 3. How many books should each class repair? A read a book, the first day read 18 pages, the next day read 1 / 8 of the whole book, there are still 45 pages left to read, how many pages of this book?

There are 1200 story books in the school, and the number of science and technology books is 3 / 8 more than that of story books. How many are there? Qianjin village paved a 480 meter stone road with stones. One third of the road was paved on the first day, and three fifth on the second day. Which day was the most paved? How many meters more? A car has traveled 3 / 8 of the whole journey from place a to place B, with 15 kilometers left in the middle. How many meters is the distance from place a to place B? According to the number of students in three classes of grade 6, the school gives the repair tasks of 83 books to each class. There are 52 students in class 1, 56 students in class 2 and 58 students in class 3. How many books should each class repair? A read a book, the first day read 18 pages, the next day read 1 / 8 of the whole book, there are still 45 pages left to read, how many pages of this book?

1. 1200 * (1 + 3 / 8) = 1650, 2, 480 * (1 / 3) = 160, 480 * (3 / 5) = 288, 288-160 = 128, 128m3 more on the second day than on the first day, 15 / (1 / 2-3 / 8) = 120km, the midpoint is 1 / 2, there is still 1 / 8 distance from the midpoint

Add appropriate operation symbols or parentheses between the following four 4 to make both sides of the equal sign equal. 4 () 4 () 4 = 5
Add appropriate operation symbols or parentheses between the following four 4 to make both sides of the equal sign equal. 4 () 4 () 4 = 7

＋－／

Fill in the appropriate operation symbol in () so that both sides of the equal sign are equal. 3 () 3 () 3 () 3 = 2

÷＋÷

Fill in the appropriate operation symbol in to make both sides of the equal sign equal

3x3-3÷3=8

Answer unit test 1 under mathematics evaluation manual 5

Although I have the answer, I think it's better to write by myself. You can do it by yourself. If you still want to tell me again

Fill in the blanks
Requirements: fill in completely, pay attention to no wrong words, pay attention to the examination, do not provide wrong answers, write down the name of the unit
① The minute hand of a clock is 30 cm long and the hour hand is 20 cm long. When the hour hand walks for 6 hours, the swept area is () square centimeter. When the minute hand turns around, the distance the needle tip travels is () centimeter
② There is a cube whose total edge length is 24 decimeters, its surface area is (), and its volume is (); cut it into the largest cylinder, the volume of this cylinder is (), and the volume of the cone with the same base and height as this cylinder is ()
No wrong answer, formula or table, specific and complete, only answer can be provided in question 2
① Chaoyang District, a resident's home was stolen, the police uncle caught four suspects: A, B, C, D. after a trial, the police found that a, B said a lie, C, D said the truth
A: I saw that the thief was c
B: I found that D was the real thief
C: I can prove that a must not be a thief
D: I'm not a thief
Please infer who is the real thief
② There is a four digit number. The number on each digit is different. The number on the thousand digit is three times that on the ten digit, and it is not even. The number on the ten digit is the difference between the number on the hundred digit and the number on the individual digit. The difference between the number on the individual digit and the number on the thousand digit is five
③ A primary school held interesting sports activities, including ball rolling, bottle hitting, table tennis, basketball clip, shooting into the basket four, rope activities have single jump, double jump, tug of war three, the school requires each student to participate in two kinds of ball activities and one kind of rope activities?
Find the law
① 2,4,8,14,22,（ ）,（ ）,58,74……
② 1,2,2,4,8,32,（ ）……
③ 1,2,5,14,122,（ ）……

1、 1 / 2 π R & # 178; = 1 / 2 × 20 & # 178; π = 200 π square centimeter (or 628 square centimeter), circumference of circle = π d = π × 30 × 2 = 60 π centimeter (or 188.4 centimeter) 2. A cube has 12 edges, which are equal, so the edge length is 24 △ 12 = 2 decimeter, so the surface area is 2 × 2 × 6 = 24 square decimeter

1. There are four students in class 61 practicing shooting, each of them makes ten shots, and four of them make 35 shots in total?
There are 88 students in a certain school who have their birthdays from Monday to Sunday. How many of them must have their birthdays on the same day?
It is necessary to make a formula calculation

At least means that the minimum number of guarantee questions set into force, because four people cast a total of 40 times, 35 times, so failed five times, if all three people hit, then the last one must hit five times, otherwise the question set does not work, if the last one cast more than five times, then the other three people do not all hit, so at least five times

A and B are walking on a circular road with a circumference of 30 meters. A is 1.3 meters per second, B is 1.2 meters per second. They walk from the same place with their back at the same time. After their 10th meeting, how many meters does B have to walk to return to the starting point?

[30 △ 1.3 + 1.2] × 10 × 1.2 = (30 △ 2.5) × 10 × 1.2, = 12 × 10 × 1.2, = 144 (m). 30 × 5-144 = 150-144, = 6 (m). A: B has to walk 6 meters to get back to the starting point

The two ships, Party A and Party B, set out from two ports 240 km apart at the same time and met on the way after 4 and 5 minutes. It is known that the speed ratio of Party A and Party B is 11:14,

Let B be x, then a be 14 / 11x
4 / 5 (x + 14 / 11x) = 240
X=

The road repair team built a highway. In the first week, it built more than 300 meters of 25% of the total length. In the second week, it built 900 meters, which is just finished. How many meters is the total length of the railway?

（900+300）/（1-25%）=1600