Mathematics final exam questions for the next semester in the sixth grade of primary school

Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Students: Every math exam is an interesting math trip, and today is no exception. As long as you carefully examine the questions, think hard and write neatly, I believe you will get excellent results. I wish you success, ok! )

First of all, fill in the "corresponding seat" carefully. (24 points, 2 points for each small question)

1, written as (), the mantissa after omitting "billion" is about () billion.

2. In 400.04, the right 4 is in the position of (), which means () ().

3, 6 ÷ 20 = () ÷ 10 = () 50 = ()% = () Fill in the decimal.

4. The distribution law of multiplication expressed by letters is as follows.

5, right angle = right angle = fillet.

6, 3: 20 = () When 258 tons = () kg.

7,23: 49 After simplifying the ratio, the ratio is.

8. One ton of cement was used in the construction site, 3 tons less than the rest. The formula with letters indicates that the tonnage of raw cement on the site is tons.

9. A watch factory originally planned to produce 65,438+0,000 watches in 25 days, but actually produced 50 watches every day, and actually completed the task on the same day.

10, the average score of Chinese, mathematics and science in Su Li last semester was 92, and English has to be scored, so the average score of four subjects can reach 94.

1 1. naughty reading. I read the whole book on the first day 13. The next day, I read 25% of the whole book, and there were 25 pages left to read. This story book has 50 pages.

12, a cylindrical steel bar, 2 meters long, cut it into two sections, the surface area increased by 6 square decimeters, and the volume of this steel bar is cubic meters.

Second, "choosing the best among the best" is a careful selection. (5 points)

1, a commodity is sold at a 60% discount, indicating ().

(1) The original price is 60% of the current price; ② The current price is 60% of the original price; (3) The current price is 40% of the original price]

2. Girls in Class 2, Grade 6 account for 25% of the class, and the ratio of girls to boys is ().

〔①2﹕3; ②3﹕2; ③5﹕2〕

3. Cut a cube with a side length of one meter into two cuboids at will, and the surface area of these two cuboids is () square meters. の①6a 2； ②8 a2； ③ 12a2】

4. Fold a piece of paper with a thickness of 0. 1 mm in half, and then fold it in half. After folding it four times, the paper will be () mm thick.

〔①0.4; ②0.8; ③ 1.6; ④0.32〕

5. The length of batten A is 9 cm, and the length of batten B is 7 15 of batten A. These two kinds of battens form an isosceles triple solution shape, and the circumference of an isosceles triangle is () cm.

〔① 12.6; ② 17.4; ③22.2; ④27〕

Third, the "wonderful hand rejuvenation" eliminates the disease. (5 points)

In math class, Mr. Wang asks students to describe things in life in mathematical language. Please analyze it mathematically and draw a horizontal line in the wrong place.

Zhang Hong said, "It's a pity that I was born in 1992 on the afternoon of February 29th, and I usually have my birthday only once every four years." . Su Wei said: "The score of 3: 0 is often seen in the game, so the latter item of the game can be 0." . Qiao Lin said: "The day before yesterday, four classmates and I took turns to carry our sprained classmate to the hospital 200 meters away, with an average distance of 40 meters." Xiaoyu said: "The winning rate of a lottery ticket is 10%. Every time you buy 100 lottery tickets, you will definitely win 10 lottery tickets. " Xiaohua said, "Last time my father wanted to make a cylindrical ventilation pipe with a diameter of 0.3 meters and a length of 3 meters, I suggested buying at least a rectangular iron sheet with an area of 2.8 square meters, excluding connector consumables."

Fourth, "clever calculation" is clever, fast and correct. (37 points)

1, fill in the number directly. (10)

2.4÷80= 0.25×8=30÷30%= 0.3×0.3= 7÷ 1.4=

38 ×49 = 12÷34 = 57 ×56= 56 - 13 = 45 + 45 =

2. Off-mold calculation. (Friendly reminder: some can be simplified) (18 points)

4000-3456÷32×5 3.68-3.6×0.2+0. 18 48×9.9+48×0. 1

( 1-34 )÷0.25×4 (6-6×23 )÷ 12 2÷[ 7 12 +( 56 -5 12 )]

3. Solve the equation. (Warm reminder: Pay attention to the writing format! ) (6 points)

58 = X 12 X:2 = 0.25 655438+08 X+3X = 2.4

4. Text questions. (3 points)

(1) Three times a number is 0. 1 less than 16. What's this number? (Equation solving)

Fifth, hands-on practice is really interesting. (3 points)

First draw the height at the bottom of the picture below, and then measure the required data (take the whole centimeter) to find out its area.

Sixth, careful observation is very practical. (3 points)

The following is the electricity meter reading statistics of Xiaoli's family at the end of1-April this year. Answer the following questions according to the table.

January 1234

Reading (degree) ...1035100155 ...

(Friendly reminder: electricity consumption this month = electricity meter reading this month-electricity meter reading last month)

1, Xiaoli's electricity consumption in February;

2. If the charge per kilowatt-hour is 0.45 yuan, Xiaoli's family will pay the electricity bill in March;

The electricity consumption in April increased by 20% compared with that in March. Fill in the meter reading in April.

Seven, I can solve problems. (23 points)

1. Teacher Li deposited 8,000 yuan in the bank for three years at an annual interest rate of 2.25%. After deducting 20% interest tax, how much interest can he get back at maturity? (4 points)

Xiaoming said that he is three years younger than his grandfather this year. Xiao Ming is known to be 15 years old this year. How old is grandpa? (column equation solution) (4 points)

Class 3.6 (1) is divided into three groups: A, B and C, with 724 students in Group A.. If two students are transferred from Group C to Group A, the number of students in the three groups is exactly equal. How many students are there in the class? (5 points)

4. The picture below shows a cylindrical cake box (unit: cm). Put a trademark on its side. What is the minimum area of the trademark? (5 points)

For the sake of children's health and safety, the experimental kindergarten provided each child with a water cup. 3 yuan offers a 10% discount on a water glass, and Xinhuadu Supermarket "buys eight and gets one free". Kindergarten wants to buy 180 cups. Please be a "staff officer" and figure out which is more cost-effective. Please write down your reasons. (5 points)