People's education printing plate fifth grade first volume mathematics midterm comprehensive exercise answer

I can fill it out correctly. (20 points)

1, 0.62 hectares = () m2 2: 45 = () hours

2.03 hectares = () hectares () square meters 0.6 minutes = () seconds.

2. The quotient of14.1÷11is a cyclic decimal (), which can be abbreviated as (), and the number with three decimal places is about ().

3. Put 2.54 and 2.54 (? ), 2.545 and 2.55 ... Use ">" in order.

4. Fill in ""or "=" in ○.

( 1)0. 18÷0.09〇0. 18×0.09 (2) 0.7×0.7〇0.7+0.7

(3)3.07×0.605〇0.307×6.05 (4) 4.35× 10〇0.8×43.5

5. The weight of a barrel of soybean oil is 100 kg, and X kg is used every day. After 6 days, there is 79 kg left, which is expressed by equation () = 79; x=().

6. A right triangle, the length of the opposite side of the right angle is 10 cm, the other two sides are 8 cm and 6 cm respectively, and the height of the opposite side of the right angle is () cm.

Xiao Ming is one year old, his father is three years older than him, and his father is () years old.

8 8. 100 kg of peanuts can squeeze out 39 kg of oil. According to this calculation, every kilogram of peanuts can squeeze out () kilograms of oil.

9. The product of two factors is 3.6. If one factor is amplified by 2 times and the other factor is amplified by 10 times, the product is ().

The highest quotient of 10 and 686.8÷0.68 is ().

2. An impartial judge (tick "√" in brackets is correct, and tick "×" in brackets is wrong). (5 points)

1 and 0.05 are multiplied by a decimal, and the product must be less than 0.05. ( )

2. The quotient of fractional division is less than the dividend. ( )

3. Two triangles with equal areas can be combined into a parallelogram. ( )

4. When the perimeters of a rectangle and a parallelogram are equal, the areas are also equal. ( )

5. An equation with an unknown number is called an equation. (

Third, choose one. (Fill the letters of the correct answer in brackets) (5 points)

1, the following formula is equal to the result of 99÷0.03 ().

a、9.9÷0.003 B、990÷0.003 C、9900÷30

2. Draw the parallelogram into a rectangle (with the same side length) with an area of ().

A, B is bigger than the original, C is smaller than the original, and it is as big as the original.

3. Because 38×235=8930, 0.38× 2.35+ 100 = ().

189.3

4, 47.88 ÷ 24 = 1.995, according to the method of four houses and five people, accurate to one percent should be written as ().

A.2.0 B. 2.00 C. 1.99

5. In a triangle, the average degree of two angles is 45 degrees, and this triangle is a () triangle.

A. acute angle B. right angle C. obtuse angle

Fourth, the little psychic. (40 points)

1, a number written directly. (10)

0.00 1+ 10.099= 3-0.98= 6×0.25= 0.63÷0.9= 1.8×0.4=

8.95÷0.895= 1.2×4= 3.9×0.0 1= 2.33× 1.2= 1.25×0.8=

2. Vertical calculation. (6 points)

(1)0.58×0.025 (column vertical calculation) (2)4. 194÷ 1.4 (the quotient is accurate to one percent)

3. Off-type calculation (simple calculation if possible) (12 points)

( 1)0.0 1+ 1.0 1×99 (2)26×20.2-8.4- 1.8

(3)89.3×43+38×89.3+893× 1.9 (4) 10.0 1× 10 1- 10.0 1

4. Solve the equation. (6 points)

( 1)7x÷3 = 8. 19(2)4x-0.5x = 0.7(3)3.5×6-3x = 1 1.4

5. Column calculation. (**6 points, 3 points for each small question)

What is the product of (1)3.6 minus 0.8 times the sum of 1.8 and 2.05?

(2) multiply 7 by a number and subtract this number. The difference is 42.6. Find this number.

Five, I can solve the problem! ! (30 points)

1. There are 2 10 apple trees in the orchard, twice as many as 38 peach trees. How many apple and peach trees are there in the orchard? (Solve by arithmetic first, then use the equation. ) (4 points)

2. The site needs 47 tons of yellow sand, which will be transported six times by a truck with a load of 4.5 tons, and the rest will be transported by a truck with a load of 2.5 tons. How many times will it be transported? (first solve by equation method, and then solve by arithmetic method. ) (4 points)

3. Two cars, Party A and Party B, set off from two places 630 kilometers apart at the same time and met after 4.2 hours. It is known that car B travels 70 kilometers per hour, and how many kilometers does car A travel per hour? (4 points)

4. There are 840 sheep in a farm, of which 560 sheep can produce wool 14.2 kg on average, and the rest can produce wool 8.5 kg on average. How many kilograms of wool can sheep on this farm produce? (4 points)

5.A car and B car leave from Station A in the same direction at the same time. Car A travels 40 kilometers per hour, and the speed of car B is 1.2 times that of car A. After 3.8 hours, how many kilometers are the two cars apart? (4 points)

6. Buying four pens is more expensive than buying five gel pens, 4.8 yuan. The price of each gel pen is 1.2 yuan. How much is each pen? (5 points)

7. The shape of the paddy field is shown in the figure below. How many holes do you need to insert if you transplant rice seedlings according to an average of 30 square decimeters per hole?

Sixth, additional questions! ! (10)

Party A, Party B and Party C spend the same money to buy a batch of apples. During the distribution, both parties took 24 kilograms more than Party C, and both parties gave 24 yuan to Party C. How much is the apple per kilogram?

Reference answer (taught by others)

1. 1 and15; 30; 16; 2, less than; 3、 13 ; 23 ; 4、4; 4: 1;

5. The speed of the car; 6、4000; 7、5; 8; 4; 40; 8、 128; 9、3; 10, 18.84 cm; 1 1、9.42; 12、5; 13、0.0 1。

Second, 1, ×; 2、×; 3、√; 4、√; 5、√;

Third, 1, a; 2、B； 3、B； 4、B； 5、C；

Fourth, 1, omitted. 2、( 1) 1 1 1 ; (2) 18 ; (3)78 ; (4) 12

(5)2247 ; (6)3; 3 、( 1)x = 70； (2)x = 20/3； 4. Omit; 5.( 1) This number is 7/5; The figure is 4.7.

Verb (abbreviation of verb) Draw a line in the diagram 1; Figure 2 shows two.

Sixth, solve the problem. 1、(2)60-60×( 1- 14 ); (3)60-60÷( 1+ 1/3)(6)60-60×3/4; 2. The speed of A: A is 32km/h; B The speed is 28 kilometers per hour.

3. The paving area is about 200 square meters. A: There are 30 students in Class Two and 39 students in Class Three. 5. It takes 10/3 hours to answer.

Reference answers for the fifth grade exam (taught by others)

1. 1, 6200; 2.75; 2; 30; 36; 2. Mixed, 1.28 1(8 and 1 are there any small ones? ), 1.282。 3. Omit.

4、>; ; 5、 100-6x； x = 3.56、4.8; 7、3a+b； 8、0.39; 9、72。 10,000; 10 10;

Second, 1, ×; 2、×; 3、×; 4、×; 5、√。

Third, 1, a; 2、A； 3、C； 4、B； 5、B；

Fourth, 1, omitted; 2、0.0 145; 3.00; 3、( 1) 100; (2)5 15;

(3) (Jane) 8930; (4) (Jane)1001;

4 、( 1)x = 3.5 1； (2)x = 0.2； (3)x = 3.2；

5、( 1)(3.6-0.8)×( 1.8+2.05)= 10.78;

(2) Solution: Let this number be x.7x-x = 42.6; x = 7. 1；

Verb (abbreviation of verb) 1. Answer: 340 apricot trees; Peach tree 1360.

2.a: It will be shipped in eight times.