Math test questions in the second volume of the fourth grade
First, fill in. (26 points)
1.101 million is (), and there are () million out of 100 million. Like this, the forward speed between every two adjacent counting units is ().
2. The largest seven-digit number is () and the smallest eight-digit number is (). The difference between them is ().
3. A number with tens of millions and tens of thousands of digits is 5, the tenth digit is 8, and the rest digits are 0. This number is written as () and pronounced as ().
The number consisting of 460 million, 7 million, 3 thousand and two is (), which can also be regarded as () 10 billion, () 1 0 million and ()10.
5. The product of three digits multiplied by two digits may be () digits or () digits.
6. Estimated 506? At 68, 506 can be regarded as (), 68 as (), and the estimated result is about (), which is different from the actual result ().
7. Use rounding method 7□7890000? 800 million yuan □ can be filled in ().
8. The plane flies 960 kilometers per hour, 960 kilometers per hour can be written as ().
9. The product of two numbers is 450, one multiplier is enlarged by 100 times, and the other multiplier remains unchanged. Now the product is ().
10.850? The product of 25 is () digits. 25? There are () zeros at the end of the product of 400.
The height of 1 1 10 nickels stacked together is about 1 cm. In this way, the stacking height of 1000 nickels is about () meters, and the stacking height of 1 10,000 nickels is about () meters.
It is about () meters, and the height of 1 100 million pieces stacked together is about () kilometers.
Second, choose one. (7 points)
1.7 to 7: 30, the minute hand turns ().
a、30？ b、90？ c、 180？ d、60？
2. In the following formula, and 15? The different formula of 160 calculation result is ().
a、 150？ 16 B、30？ 80 degrees Celsius, 30 degrees Celsius? 320 D、60？ 40
3. The largest number of symmetry axes in the figure below is ().
A, square b, equilateral triangle c, rectangle d, circle
4. The number closest to 300,000 is ().
A 292000 B 302000 C 300200
5. From 500050005000 miles on the left, which is the second one? 5? Represents ().
1500 million 500,000 500,000
6. As shown in the figure on the right, you can get triangle B by bypassing point O ().
A. rotate 90 counterclockwise? B. rotate 60 clockwise? C. rotate 90 clockwise?
7. The speed of the car is 35 kilometers per hour. How many kilometers does it travel in five hours? The formula used is ().
A. distance? Time = speed B. Speed? Time = distance C. distance? Speed = time
Third, the calculation problem. (24 points)
1. Write the number directly. (8 points)
23? 300= 320? 4= 8? 6+7= 2700000= () ten thousand
220? 40= 42? 200= 9? 7+8= 3700000000= () billion
2. Use vertical calculation. (8 points)
305? 16= 35? 6 18= 230? 63= 850? 20=
3. Make the calculation as simple as possible: (8 points)
129+46+54 189-82- 18 83? 25? 4 196-(32+96)
Fourth, complete the following questions as required. (19)
1. Omit? Wan? Write the approximate number after the mantissa. (3 points)
345360000? 94999? 7684930?
2. Omit? Billion? Write the approximate number after the mantissa. (3 points)
3990000000? 7684930000? 53097000000?
3. Write the product of the following two questions directly according to the product of each group of 1 questions. (6 points)
25? 3=75 8? 16= 128 24? 5= 120
25? 30= 8? 160= 24? 15=
25? 300= 8? 1600= 48? 5=
4. Draw the following figures as needed. (4 points)
? Rotate the quadrilateral clockwise around point A by 90? .
? Complete the rightmost graph to make it axisymmetric.
5. Look at the diagram. (3 points) How many science books and story books do you want?
technology tree
storybook
Mathematics application problems in grade four
1. A car travels from place A to place B at a speed of 95 km/h and arrives in 8 hours. It took 10 hours to return from B to A. What was the average speed of this car when it returned? (4 points)
An elephant in the park eats 240 kilograms of food a day. The breeder has prepared 5 tons of food, enough for the elephant to eat for 20 days? (4 points)
3. Master Zhang has to finish the processing task of 850 parts, which has been processed for 5 days, and the rest are 50 less than those already processed. How many parts does Master Zhang process on average every day? (Draw first, then answer) (4 points)
Xiaoming and Xiaohong have 90 stamps. If Xiaoming gives Xiaohong five stamps, they will have as many stamps. How many stamps do Xiaoming and Xiaohong have? (4 points)
5. There is a rectangle. If the width is 6 cm long, it becomes a square, and the area increases by120 cm 2. What is the area of the original rectangle? (Draw a picture first, then answer) (4 points)
6. Two baskets of oranges weigh 80 kilograms. After pouring 10kg from basket A to basket B, basket A is 2kg more than basket B. How many Jin of oranges does basket A have? (4 points)
Fourth grade math competition questions
The number 1, 800097500, 8 stands for (), 9 stands for (), and 5 stands for (). The approximate value obtained by omitting the mantissa after ten thousand digits is ().
2. According to statistics, Weifang City in 2006? Love donation? The total donation of this activity reached 86.0856 million yuan, which was recorded as () yuan.
3. According to 93? 25=2325, write the number of the following formula directly.
930? 25=( ) 93? 250=( )
930? 250=( ) ( )? ( )=23250000
4. Xiaoming's ID number is 370786199903150030, so he was born in ().
Aunt Li earns an average of 907 yuan a month and earns about () yuan a year.
6. The original area of a rectangular park is 15 hectares. Now, the length of this park has tripled, and the width remains the same. After the expansion, the area of the park is () hectares.
7 Angle is a graph composed of two () drawn from a point, which is angular () and two rays are angular ().
8 1 fillet = () right angle = () right angle.
At 3 o'clock sharp, the angle between the hour hand and the minute hand is () degrees, which is () angle;
At 6 o'clock sharp, the angle between the hour hand and the minute hand is () degrees, which is () angle;
10 Angle is measured in (). Divide a circle into 360 equal parts, and the right angle of each equal part is an angle of () degrees, and record it as ().
The size of the angle 1 1 is related to (), but not to ().
The four line segments 12 a, b, c and d form a parallelogram (as shown in the figure). Where () and () are parallel to each other, () and () are parallel to each other.