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Fill in the blanks with math questions and answers.
Fill in the blanks. (**22 points, including 2 points for 1 and 5, and the rest for 1 minute).

The digits of 1 and 10000 are (ten thousand), (one hundred thousand), (one million) and (ten million), and the counting units adjacent to one hundred million are (ten million) and (one billion).

2. The number consisting of two billion, six million and nine thousand is (2006009000), which is pronounced as (two hundred and sixty-nine thousand).

3. A ten-digit number, with the highest digit of 9,10 million, and all other digits are 0, written as (9090000000) and rewritten as (909000) in units of "ten thousand"; The mantissa after omitting the number "one hundred million" is (9 1).

4. 1000 billion is (/kloc-0 10000000);; There is10 in one hundred billion (100000000000).

5. Ranks from small to large are 50050, 50505, 55000, 50005:(50005, 50050, 50505, 55000).

6. The vertical line segment (line segment) drawn from a point outside the straight line is called the distance from that point to the straight line.

7. You can draw (countless) straight lines after one point and (one) line segment after two points.

8. Two groups of figures with parallel opposite sides are called (parallelograms). Only a set of graphs with parallel edges is called ().

9. A straight angle is (2) times that of a right angle and is rounded (1/2).

10, below which is a rectangle. If its length is expanded by 3 times, its width remains unchanged and its area is ().

The rectangular area in the drawing is18m2.

Second, judge. (5 points)

1, the smallest natural number is 0 and the largest natural number is 900 billion. (error)

2. A right angle minus an obtuse angle must be an acute angle. (right)

3. Two straight lines intersect at one point, which is called vertical foot. (error)

4. Because17 ÷ 4 = 4 ...1,170 ÷ 40 = 40 ...10. (Error)

5. Are two parallelograms with the same height together a parallelogram? (error)

Third, choose. (5 points)

1. Among the following numbers, the number that can read two zeros is (b), and the number that does not read any zeros is (a).

A.2003 150

2. The impossible corner among the four corners of the trapezoid is (c).

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

3. A book is priced at 2 1 yuan. Teacher Wang brought 180 yuan. How many copies can he buy at most? (2)

A.9 B. 8 C. 7

4, 16×750, and there are (c) zeros at the end of the product.

A. 1 B. 2 C. 3

5. In the picture below, the height of the parallelogram is 28cm, and its base is ().

A.36 cm wide 20 cm high 25 cm

Sixth, solve the problem. (***24 points)

1, Uncle Zhang Can produced 96 parts in two days. According to this calculation, how many days will it take to produce 230 parts? (5 points) 5 days

2. A truck transports goods from place A to place B, with a speed of 45 kilometers per hour, and it will be delivered to place B in 8 hours. When I come back, I will go at a speed of 60 kilometers per hour. How many hours will it be back? 3. Look at the picture and answer the following questions. (6 points) Six hours

There are sales promotion activities in the shopping center. Buy one 38 yuan and two 68 yuan for schoolbags. Now I have 382 yuan. How many can I buy at most? 1 1 How much is left? 8 yuan

I am a parent, and my child has finished the junior high school exam, and only scored more than 20 points in mathematics ... I found this paper online and copied it for my child to do, but many of them don't understand ... I can only rely on the heroes who know it ... The attached picture is the reference picture of the third big question and the fifth small question. .

I will. Most of them have not been copied ... thank you.