Fourth grade volume 1 mathematics exercises

Fourth grade volume 1 mathematics exercises

1、 Fill in the blanks (1 point × 20)
1. The number of five hundred thousand and eight one thousand is ()
2. Starting from the individual position, the () position is 10000, the () position is 100 million, the sixth position is () and the tenth position is ()
3. 20538000 is () digit, the highest digit is (), where "3" stands for ()
4. One circle angle = () flat angle = () right angle
5. There are () right angles and () acute angles on a triangle ruler
6. Xinhua dictionary has 825 pages, about () pages
7. There are () groups of parallel lines in each square, and the opposite sides of the square () each other
8. 12 is 103 times, 930 is 93 times
9. (a × b) × C = a × (B × C) denotes the () law
10. Only () lines can be drawn after two points, and () lines can be drawn after one point
2、 Judgment (2 points × 5)
1. Two parallel lines never intersect
2. The approximate number must be larger than the exact number
3. The opposite sides of a square are perpendicular to each other and the adjacent sides are parallel to each other
4. When you write 43000, you don't write any zeros
5. An angle of 0 ° is as big as a 360 ° angle
3、 Selection (2 points × 5)
1. Two lines perpendicular to each other can intersect into four ()
A. Acute angle B, right angle c, obtuse angle
2. The size of the corner is related to both sides
A. The size of opening b, length
3. There are () corners in the figure below
A. 4 B, 6 C, 10
4. You can draw () straight lines after a point
A. 1 B, 2 C, 5
5. In the calculator, if the number is found to be incorrect, use ()
A. Press C, CE key, B, use rubber
4、 Calculation after estimation (3 points × 4)
121×12 5×912 408×33 312×16
5、 Calculation by simple method (3 points × 4)
201×24 37×99+37 125×（7×8） 24×7×5×6
6、 Formula calculation (3 points × 2)
1. What is the sum of 23 consecutive 837?
2. What's 12 times 756?
7、 Operation questions (13 points)
1. Draw the specified angle as required (1.5 points × 4)
A 95 degree angle, a 40 degree angle
A 130 degree angle, a 170 degree angle
2. Measurement (1.5 points × 2)
（ ）cm （ ）cm
3. Make parallel and vertical lines of known straight lines m and N through P. (4 points)
8、 Practical questions (17 points)
1. Land a is 500 kilometers away from land B, and a car runs 180 kilometers in three hours. According to this calculation, can it arrive in eight hours?
2. A road is 80 meters wide. When Yangyang crosses this road, how can he get the nearest? How many meters is the shortest? Why
3. During the summer vacation, the students went to the theater, which has 358 seats and each ticket is 25 yuan
(1) 260 tickets have been sold. How much do you charge?
(2) The remaining tickets are sold at 20 yuan. How much can I collect in total?