Class name score
First, fill in "corresponding seat". (65438+ 0 point per grid)
1, the number of boys in the sixth grade is 4 1 1 of the number of girls, so the number of boys accounts for () () of the whole grade.
2. Divide the one-meter rope into four sections on average, each section is () meters long, and each section accounts for () of the total length.
3, the meter is () meters; A kilogram is a kilogram; () tons is 3 tons.
4. A pile of sand weighs tons, with 13, () tons used, and the rest is () () of the total.
5, a basket of apples, half sold for the first time, half sold for the second time, the rest of the apples belong to this basket of apples ().
6. When A, the reciprocal of A must be greater than A ... When A, the reciprocal of A must be less than A..
When a, the reciprocal of a must be equal to a.
7. fill in ">", "
× ○ 34 × 1○34 ×34 7 13 ×0○7 13
78× 1 19×78 34×34×78 5m 14× 1m。
8. A road is 480 meters long. 13 of this road was fixed on the first day, 16 of this road was fixed on the second day, and the rest () was not fixed.
9, a number is 80, and this number is ().
10, a rice mill can grind into tons of rice per hour, 1 hour can grind into tons of rice, 1 ton of rice takes () hours.
1 1. A bag of rice weighs 25 kilograms. Eat this bag of rice 15 first, then eat this bag of rice 15 kg, and eat () kg twice.
12, a× 73 =112× b =1515× c, a, b and c are not equal to 0, so the three numbers of a, b and c are arranged as (from small to large.
13, an isosceles triangle is surrounded by 35cm wire. If the ratio of waist length to bottom length is known as 3∶ 1, the waist length is () cm.
Second, "clever calculation" shows its talents.
1, write the number directly (5 points)
0. 1÷ 1 10 = 9 14 ×23 = 14 — 16 = 56 +23 = 0.25×23 ×4=
2÷29 = 14 15 :35 = 3.2×38 = 0÷34 × 12+2= 3.009×4.9≈
2. Use your favorite method to calculate (16 points)
34 ×56 + 16 ×34 58 ×64×34 (5 18 -524 )÷56 40 13 ×(26×340 )
17 ×3÷ 17 ×3 38 ÷( 12 + 14 ) 922 ÷ 14 ÷6 1 1 (3 10 +3 10 +……+3 10 )+(25 +25 +…..+ 25 )
100 100
3, simplify the ratio (8 points)
18: 720.15: 3.5 29: 4151.2m: 60cm
4. Fill in the blanks with pictures or calculate (7=3+2+2)
5 tons
(1) Tonnage of coal fired in June
The tonnage of coal burned in July was less 16.
①5× 16 means: _ _ ② 5× (1-kloc-0/6): _ _ _ ③ 5× (1-kloc-0/6+0): _
(2)
Column calculation:
(3)
Column calculation:
Third, "explore practice" and draw a picture.
1. First, divide the trapezoid in the grid diagram on the right into three triangles.
Make their area ratio 1: 2: 3. (2 points)
2. If the trapezoidal area is 90 square meters, then in the divided graph,
What is the smallest triangle area? (2 points)
Fourth, I can solve the problem. (36=6+3× 10)
1, only column types are calculated, not calculated.
(1) A store has 100 tons of fruit. Sold 45 tons, how many tons are left?
A rope is 45 meters long. First 25 meters, then 15 meters. How many meters does a * * * need?
(3) Distance from Huai 'an to Nanjing100km. A car traveled 45 kilometers from Huai 'an to Nanjing. How many kilometers is it from Huai 'an?
2. A total of 360 trees were planted by Party A, Party B and Party C, and the proportion of planting quantity was 4: 3: 2. How many trees are there in each race?
There is a batch of cement, 40 tons on the first day and 42 tons on the second day. At this time, the ratio of surplus cement to transportation cement is 3: 2. How many tons is this batch of cement?
4. The distance between A and B is 450km, and two cars of AB are coming to each other at the same time. After five hours, the speed ratio of the two cars is 5: 4, so what is the speed of the two cars from AB?
5. The mass ratio of two barrels of oil is 7: 3. If 12kg oil is taken out of the big barrel and poured into the small barrel, the two barrels of oil are exactly equal. How much oil is there in each of the two barrels?
6, a drug, after the price reduction 12 yuan, the current price is lower than the original. What is the original price of this medicine?
7. The number of white rabbits is 4 less than that of black rabbits, and the number of white rabbits is less than that of black rabbits 15. How many white rabbits are there?
8. Xiaoming measured the shadow length of a 3-meter-long bamboo pole to be 2.4 meters, and at the same time measured the shadow length of Jinma Plaza Building to be 38.4 meters. Do you know the height of this building?
9. The number of teachers in a school does not exceed 60, and the number of teachers who have been vaccinated with influenza A vaccine accounts for 35% of the total number of teachers. How many teachers will be vaccinated this week, so the number of people vaccinated will account for 57% of the total number. How many teachers are going to be vaccinated this week?
10, Xiao Ming blows soap bubbles once every minute, blowing 80 bubbles at a time. After the soap bubble is blown out, it breaks in half in one minute. After two minutes, 120 is still broken. After two and a half minutes, all the soap bubbles burst. Xiaoming blew 80 new soap bubbles in the 30th minute. How many soap bubbles didn't break?
1 1. The whole cycle of red blood cells in blood from growth to decline generally takes 120 days. Under normal circumstances, the total amount of human blood is basically unchanged. The total blood volume of an average adult is about 340 of the body weight, that is, 70 ml of blood per kilogram of human body weight. Medical research has proved that if the blood loss does not exceed 1 10 of the total blood volume, the human body can quickly recover the total blood volume through the adjustment of nerves and body fluids, without obvious cardiovascular disorders or other adverse consequences. An adult weighs 60 kilograms. Under normal circumstances, donating blood once a year, 200 ml each time, will it affect his health? Please illustrate by calculating and comparing.