The final examination paper of mathematics in the sixth grade of primary school (PEP)

First, fill in the blanks. (20 points, each grid 1 minute)

1, a number consists of five thousands, eight tens, two tenths and six thousandths. This number is written as ().

2, 3.04058700 writing (), the mantissa after omitting ten thousand is ().

3. 1 ton125kg = () ton; 2. 15 hours = () hours () minutes.

4. Among the odd numbers within10, the smallest prime number is () and the composite number is ().

5. Cut the 4-meter-long wire into 5 sections, each section is () of this wire, and each section is () long.

6. The weight ratio of salt to water in brine is 1: 10, so the weight of salt accounts for () of the weight of brine.

7. On the map with the scale of 1∶40000, the distance between the two places is 6 cm, but the actual distance is () meters.

8. Increase the denominator of 35 by 20. To keep the size of the fraction unchanged, the molecule should be enlarged () times, that is, increased ().

9. When a number is divided by 8, the quotient is 12, and the remainder is half of the divisor. This number is (), and decomposing this number into prime factors is ().

10, the volume of a cylinder is 12 cubic decimeter, and the volume of four cones with the same height as its bottom surface is () cubic decimeter.

1 1, (): 56 = 62.5% =()= () (fill in decimal places)

2. True or false (tick "√" for the right and "╳" for the wrong) (5 points for each small question, 1 point)

1, the multiple of a number must be greater than the factor of this number ()

2. The height of Xiao Xin's high jump is out of proportion to his height. ( )

The sum of two different natural numbers is always less than the product of these two numbers. ( )

4. Because 22=2×2, а2=а×2. ( )

5. If the number of A is more than B 15%, then the number of B is less than A 15% ... ()

Third, multiple-choice questions (put the serial number of the correct answer in brackets) (10, 2 points for each small question)

1, a certain working efficiency, total workload and working time ().

A, proportional to B, inversely proportional to C, out of proportion

2, 8.996 keep two decimal places is ().

a、8.99 B、9 C、9.00

3, it is easy to see how many kinds of quantity, with () is more appropriate.

A, bar chart b, line chart c, fan chart

4. A worker made 150 parts, and 15 parts were unqualified, and the qualified rate was ().

a、 105% B、90% C、 10%

5. The number of A is more than that of B 14, and the ratio of B to A is ().

a、5∶4 B、4∶5 C、 1∶4

Four, the calculation problem (40 points)

1, direct writing number (5 points, 0.5 points for each small question)

6-3.75= - = +0.75= 1.5- =

( + )×4= 0. 1×0.99= 0×7.5= ÷6=

1÷ - ÷ 1= 7× ÷7× =

2. Off-model calculation (simplify it if it can be simplified, and write down the main steps) (18, 3 points for each small question)

①3.6-2.8+7.4-7.2 ② ÷23+ × +

③( + )÷ - ④ 18÷[ +( - )]

⑤3.8×0.73+0.73×6.2 ⑥3.27×99+3.27

3. Find the unknown x(8 points)

①x-2 1×= 4② 1 15 x+25 x = 4 15

③0.25 x = 1.253 ④x×( - )=

4, column calculation (9 points)

What is the quotient of ① 18 divided by 12?

② The number of a number is greater than itself 1.8. What's this number?

What is the quotient of the difference between 12 of 42 and 20 divided by 4?

Five, the application problem (25 points, 5 points for each small question)

1. It costs 500 yuan to lay a 4 mm long floor tile on the floor of a small conference room. How many tiles does it take to use a floor tile with a side length of 5 decimeters? (Use proportional solution)

2. A 400-meter-long road was built, and it was 120 meters in three days. According to this calculation, how many days will it take to complete this road?

3. Nanshan Orchard has 1500 peach trees. There are 20% fewer peach trees than pear trees. How many pear trees are there?

4. The roller of the roller is a cylinder with a diameter of 1.5m and a width of 2m. Now roll forward for 40 weeks, how many square meters is the road area?

5. A barrel of oil, the first time I used this barrel of oil, the second time I used 30 kilograms, and there is still this barrel of oil left. How many kilograms is this barrel of oil?

Reference answer

fill (up) a vacancy

1, 5080.206 2, 3040058700 3040063, 1. 125.

2 hours and 9 minutes 4 3 9 5 6 7 2400 meters.

8、 5 12 9 、 100 100=2×2×5×5 10、 16

1 1、35 0.625

Second, the judgment question

× √ × × ×

Third, multiple choice questions

1、A 2、C 3、A 4、B 5、B

Fourth, the calculation problem

1, oral calculation