Mid-term examination paper and answer of the first volume of primary school mathematics in grade five.

Grade five-midterm examination paper

First, write the results directly. (9 points)

40×0.5= 6.8÷4= 14×0.5= 12.5÷5= 3.2÷0.8=

4×9.5×2.5= 15×0.04= 3÷0.6= (3.6-3.6) ÷9. 1=

Fill in the blanks. (2 points for each small question, *** 12 points)

1, 3.2×0.25 means ().

2. The highest quotient of128.5÷ 23 is in the position of ().

3. When calculating 1.234÷0.28, the dividend and divisor are expanded at the same time ().

4、0. 1 123 123 1。 . . . . . You can write () in a simple way, which is the cyclic decimal of ().

5, 3.25 hours = () () minutes.

The quotient of 6.6.7÷ 1.9 has one decimal place () and two decimal places ().

Third, multiple choice questions. (Fill in the serial number of the correct answer in brackets) (6 points)

The divisor of 1 and 3.4932 plus two decimal places is ()

①3.49 ②3.5 ③3.50 ④3.495

2. When one decimal place is reserved, a number of about 4.2 is obtained. In the following figures, () cannot be this decimal.

①4.239999…… ②4.2 1 ③4.23 ④4.248 ⑤4.25 1

3. The quotient () in the following formula is the smallest.

① 12÷78 ② 1.2÷78 ③ 120÷780 ④ 12÷780 ⑤0. 12÷78

Fourth, the judgment question. (Tick √ in brackets for correctness, tick ×) for error (6 points).

1, infinite decimal must be greater than finite decimal. ( )

2. When two decimal places are multiplied, the product must be less than the multiplicand. ( )

3. When the dividend is greater than 0 and the divisor is less than 1, the quotient is greater than the dividend. ( )

5. fill in ">", "

1、 1.36÷0.99 1○ 1.36 2、 74.9×0.5○74.9

3、 18.9× 1.5○ 15× 1.89 4、3.6× 100○3.6×0.0 1

Six, according to 36×0.8=28.8, write two division formulas: (4 points)

1、 2、

Seven, calculation questions. (27 points)

1, calculate the following problem. (12)

(1) 289.8 ÷ 18 = (check) (2) 1.55 ÷ 3.9 material (keep two decimal places).

⑶ 0.4× 12.5×(4.2- 1.7) ⑷ 2 1.5÷[(6.07+2.53) ×0.5]

2. Simple calculation. (Write the main simple process) (9 points)

⑴ 3.6×3.6+ 1.4×3.6 ⑵ 0.25×0.8×0. 125×0.4

⑶ 2.7× 1.5-2.7

3. Find the unknown X. (6 points)

⑴x÷0.38 = 1.65⑵x×0.7 = 10.7

Eight, column synthesis or equation with unknown x and solve it. (6 points)

1, 0. 1 1 and the product of 300 divided by 1.43 and 0. 1 1 What is the difference?

2. What is the sum of12 multiplied by 8.5 plus the quotient of 27.3 divided by 4.2?

Nine, application questions. (22 points)

1. The annual turnover of a store last year was 6,543,800 yuan+0,450 yuan. What is the average monthly turnover? (Figures shall be kept to two decimal places)

(5 points)

Yang Li read a novel with 264 pages. He has read 72 pages in the first three days. According to this calculation, how many days will it take him to finish reading this novel? (5 points)

The distance between cities A and B is 650 kilometers. A bus and a truck leave from cities A and B respectively at the same time. Five hours later, they met. As we all know, this truck travels 60 kilometers per hour. How many kilometers does this bus travel per hour? (6 points)

4. The canteen of the cement factory has returned 3 tons of coal, and it is planned to burn for 20 days. After improving the furnace, this batch of coal actually burned for 25 days. How many kilograms of coal is actually saved than planned every day? (6 points)

First, write the results directly.

20, 1.7,7,2.5,4

95,0.6,9,0

fill (up) a vacancy

& lt 1 & gt； 3.2 times 0.25

& lt2> individual

& lt3> 1000 times

& lt4> (omitted), 3

& lt5 & gt3, 15

& lt6 & gt3.5

Third, multiple choice questions

& lt 1 & gt； ①