Primary School Graduation Mathematics Mock Paper Beijing Normal University Edition

There are 44 students in a class, and the ratio of the number of boys to girls is 5:6.

Know who I am? Teacher Wang'

(25-4) [1+(1-25%)] 25%=3 (box) Analysis: If the total number of apples is regarded as a unit of 1, then the remaining apples are 1-25%, and the remaining pears are as many as apples, which are also 1-25%.

The total number of apples and pears is 25 boxes - 4 boxes of pears sold = the total number of apples + the number of boxes of pears left corresponds to the rate of 1 total number of apples and 1-25% of the remaining pears The corresponding rate = unit 1 (total number of apples).

25-4) [1 + (1-25%)] = 12 (boxes) means that the total number of apples is 12 boxes.

Ask how many boxes of apples are sold, and multiply by 25%.

So, the final formula is.

25-4) [1+(1-25%)] 25%=3 (box).

If the apple sold is x, then there is 25 x=25-4

The solution is x=84

Solution: The number of cases of apples is: (25-4) (25%+75%*2)=21 (175%)=12

The number of boxes of apples sold is: 12*25%=3

⑴1. （5×18+210）÷（5+9）=202.Let the speed of car B be x, and the speed of car A is 5 4x6x+5 4x 6=1620 to get x=1203

Cut into two sections to increase the base area of two circles, the base area of one circle is: square meters) then the radius of the circle is: m) then the diameter of the circle is 1 2 = 2 (m).

Splitting along the diameter is to increase the surface area of two rectangles, so that one area is: 80 2 = 40 (square meters).

The height of the pole is: 40 2 = 20 (m).

The surface area of the cylinder: base area 2 side area = square meters).

After being cut into two sections, it is added to double the base area, 2 * square of the radius = , so the radius is 1 decimeter. Vertical splitting is to increase the area of 2 rectangles, 2*2*1*height = 80, so the height is 20 decimeters, and the final surface area = 2*1*

If the area of the two circles is increased by 2 circles after being truncated, the square of the radius is.

If you split into two semicircles along the diameter, you add 2 rectangles, so the height is 80 2 2 = 20

The surface area of the cylinder is.

1. Fill in the blanks. (1 point per blank, 34 points in total).

1.The number of billions is 9, 5 on the 100 million, 8 on the 100,000 place, 4 on the thousand, and 0 on the rest of the numbers

3.The three biscuits are divided equally among 4 people, and each person gets ( ) for each person who gets three biscuits.

b = 2 3 3, the greatest common divisor of a and b is ( ) and the least common multiple is ( ) 7A and B set off from the Children's Palace to the school at the same time, A took 10 minutes, B took 8 minutes, and the time ratio of A and B was ( ) The speed ratio of B and A was ( ).

kg = ( ton liter = ( ml.

2:40 = ( 54 km² = ( ha.