First, multiple-choice questions (fill in the serial number of the correct answer (), *** 10)
1.A+5.2 = B+6.4 then (
)A . A > b . b
C.a=b
2. continuous natural numbers a, b, c,? , g, h * * has (
) a natural number.
A.h
B.h-a + 1
C.h-a
The cover area of a math book is about 250 (
) A. Square centimeter B. Square decimeter C. Square meter
4. Draw a rectangle with an integer length and width, requiring an area of 24, then you can draw different rectangles (
) species
A.3b.4c.5d.65 By 1, 0,3,5 (
) Three digits have no repeated digits.
A.24
B.8
C. 18
D. 12
Fill in the blanks (2 points for each small question, 20 points for * * *)
1. Among the three numbers of 0.6, 20÷3 and 0.666, the largest number is () and the smallest number is (
)。
2. There are arrays {1, 2, 3, 4}, {2, 4, 6, 8}, {3, 6, 9, 12} ... Then the sum of the four numbers of the100th array is (
)。
3. Some students mistakenly write the divisor 32 as 23 when calculating the division problem, and the quotient obtained is 32, the remainder is 1 1, and the sum of the correct quotient and the remainder is (
)。
The quotient of 4.3 ÷ 7 is a cyclic decimal, and the decimal point of this decimal is the first place.
The figure for 2006 is (
)。
5. Cut out a triangle with a parallelogram paper with an area of 10, and the maximum area of this triangle is ().
6. There are five Sundays in September. It is known that this month 1 is not a Sunday, so the 25th of this month is a week ().
7. Buy some toys in the kindergarten. If each class is divided into 8 toys, there will be 2 more toys. If each class is divided into 10 toys, it will be
Toys are missing 12, and there are () classes in kindergarten. 8. If the length of a rectangle is increased by 2cm, the area will increase by10cm2, and if the width is decreased by 3cm, the area will decrease by18cm2. The area of the original rectangle is (
) square centimeters.
9. In A ÷ B = 5 ... 3, A and B are expanded three times at the same time, the quotient is () and the remainder is ().
10. Three large bottles and five small bottles can hold 5.6 kilograms of ink, and 1 large bottle and three small bottles can hold 2.4 kilograms of ink. therefore
Two large bottles and 1 small bottle can hold ink (3). Calculate the following problem (12 points) (1)5× 125×5×32.
) kg.
(2) 89+899+8999+89999+899999
(3)4.27×8.3+42.7× 1.9-0.427×2
(4) 105.5+(40+9.338÷2.3)×0.5- 1.53÷\ u 65288 x 53.6
÷26.8×0. 125)
Iv. Complete the following questions (1, 2 points for 2 and 3 questions, 5 points for 4 and 5 questions, *** 16 points).
It is known that the area of rectangle A is 32 and the area of rectangle B is 20.
1. Put them on the desktop, as shown in figure 1. According to the conditions in the figure, the area of the shaded part is (2. Put them on the desktop as shown in Figure 2, where the shaded area is (
)。
)。
3. Put them on the desktop, as shown in Figure 3. If the area of the figure is 40, the area of the shaded part is (
Jiayi
)。
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four
There are 40 students in Class One, Grade Five. Everyone has participated in English extracurricular interest groups or information technology class groups, and is known to have participated in English extracurricular activities.
There are 32 students in the group, and 20 students have participated in the information technology extracurricular group. So, how many students have joined these two groups?
5. There are four numbers, and the average of these four numbers is 2 1, where the average of the first two numbers is 15, and the average of the last three numbers is 26. What is the second number?
V. Application questions (1, 2 and 3 have 6 points each, 4, 5 and 6 have 8 points each, and *** 42 points)
1. According to the regulations of the zoo ticket office, one person can get one ticket for 2 yuan, and one group ticket for 18 yuan (for 10 people to visit), with 58 students in class 1, grade 5.
How much does it cost to buy a ticket at least?
The circumference of a rectangle is 30cm, and its length is twice its width. How many square centimeters is the area of this rectangle?
3. A railway bridge is 1800 meters long, and it takes 75 seconds for the train to cross the bridge, and it only takes 15 seconds for the train to cross the roadside pole. What is the total length of the train?
The number of watermelons sent by the fruit shop is twice that of white melons. If you sell 40 melons and 50 watermelons every day, a few days later,
After selling the white melons, there are still 360 watermelons left. How many watermelons and white melons did the fruit shop deliver?
Xiao Ming went to a school from home to take an exam, and left at a speed of 50 meters per minute at first.
2 minutes, when he is based on past experience, again.
At this rate, you are bound to be five minutes late for the exam. So he immediately sped up and walked 10 meters per minute, with little effect.
Ming arrived five minutes earlier than the exam time. What is the distance from Xiaoming's home to a school?
6. Three students, A, B and C, must take water from the same tap. A needs 2 minutes, B needs 4 minutes, and C needs 1 minute.
Zhong, what's the order of water intake for three people? How many minutes do they need at least?
1
four
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Solution to comprehensive training questions of mathematics training in the fifth grade of primary school
1. 1, A 2, B 3, A 4, B 5, C 2, 1, 20÷3 0.6
2、 1000 3、34
4、2(0.42857 142857 1,2006÷6=334? 2, so it is the second place, that is, 2)
6-bit period 5, 5
6, Tuesday (from the five Sundays, the first one is not Sunday, and the first one is Saturday, 25÷7=3? 4, three days later) 7,7 (12+2) ÷ (10-8) 8,30 (10 ÷ 2) × (18 ÷ 6) 9.
1 0,2.8 (large bottle 1.2, small bottle 0.4) 3,1,100000 (break 32 into 4×8 and multiply it by 25,125) 2,9985.
Four. 1, 16(20- 1×4) 2, 16 (the same as 1) 3, 12(32+20-40) 4,/ 8 5× 18+8×2= 106 Yuan
One more question: According to the regulations of the zoo ticket office, there are 58 students in Class 1, Grade 6, with one person for 2 yuan ticket and 15 yuan group ticket (for 10 people to visit). How much is the ticket?
Five group tickets for 50 people, 75 yuan. You need 16 yuan to buy a ticket for eight people and 15 yuan to buy a group. ***90 yuan
2、30÷2÷(2+ 1)= 55×2 = 10 10×5 = 50 cm2。
3450 meters
Analysis: the question type is "crossing the bridge for the train". 75 seconds is the time for the train to cross the bridge 1800 meters plus the length of the train. 15 second is the time for the train to pass its own length. The time for the train to pass 1800m is 75-15 = 60s, and the train speed is 1800÷60=30.
The train speed is 1800÷60=30 (m/s), and the total length of the train is: 30× 15=450 (m). So the answer is: 450.
4, 1440
Analysis: Watermelon is twice as big as white melon. If 80(40×2) melons are sold every day, now 50 melons are sold every day, leaving 360. We can find out the number of days: 360÷(40×2-50)= 12, so we can't find out the total number of melons: (40+50).
52200 meters
Analysis: profit and loss problem. 2 minutes late, 50×2= 100 (m) less, 5 minutes early, 5× (50+10) more = 300 (m); The distance difference between front and back is 300+ 100=400 (m), and the speed difference is per minute 10 m, so the school arrival time is: (300+100) ÷/kloc-0+2 = 42 (min. The distance from Xiaoming's home to school is: 50×(42+2)=2200 (meters).
[5×(50+ 10)+50×2]÷ 10+2, =[5×60+ 100]÷ 10+2, =400÷ 10+2, =40+2,
=42 (points);
The distance from Xiaoming's home to school is: 50×(42+2), =50×44, =2200 (meters).
The road from Xiaoming's home to school is 2200 meters.
Note: This question belongs to profit and loss problem, and the following relationship is used to find the school arrival time: (deficit+abundance) ÷ twice content difference (speed difference) = content number (time).
6, 1 1 min:
Analysis: We must let those who have less time fight first, or those who have a long time fight first, and everyone will wait together for a long time. Therefore, in the order of C, A and B, the waiting time is:/kloc-0 /× 3+2× 2+4 = 3+4+4 =11min.