Elementary school students: The speed of doing the questions is usually fast or the exam is fast

It's all about concentrating on the questions, and there's basically no difference.

However, during the exam, the child will be more attentive to the questions, and the attention will be more concentrated than usual, and he will be a little better.

Hope, thank you!

It depends on the state of the mood at the time, and if the state is not good, even the nervous exam will be slower than usual.

The exam is fast, and the exam is moderately tense and easy to get results.

The exam is fast, very fast, usually this exam is faster and faster.

Slowly increase the number of questions! Let them understand the definition and the calculation process! 1

Do more questions, and the speed will naturally increase after a long time.

If you are slow to do the questions, you must do it first if you know how to do it, and then do it if you can't.

1.The 1 2 of the number A is equal to the 1 3 of the number B, the number A is 60, the number B is (90) The sum of 2 5 and 6 of a number is 30, and this number is (60) 2Fill in the appropriate number in ().

8 (5 8 (3 5)-1 4) = 1 A snail climbs a 9 m tall tree, rises one m during the day and slides 1 3 at night. It starts climbing upwards one morning, and after how many days does it reach the treetops?

A: After 13 days, you can reach the treetops.

6. Height 5, volume.

7. A and B.

21, not 2, right.

Is it necessary? What else can it do other than deceive yourself.

If 5a 3b [a and b are not 0], then a and b are in a [positive] ratio; If y 8 x [x is not 0], then x and y are [inverse] proportional.

A b c is a natural number, the ratio of a to b is 5:3, the ratio of b to c is 2:7, and the sum of the three numbers is 37. Then c is.

a:b:c=10:6:21）

The first mention: 5*5*5=125 cubic centimeters; The largest conical volume allows the base area to be maximized; s maximum base area = r 2, r = 5 cm2

Cone volume = ( *r 2*h) 3 = 125 12 cubic centimeters Question 2: The volume of the cone = the height of the water rising * the bottom area of the barrel = 1 cm * * r 2 = 100 cubic centimeters; The height of the cone = 3 * the volume of the cone The base area of the cone = 3 * 100 * r 2 = 300 25 = 12cm

Question 3: Fish tank cube; There are 6 sides in itself, and if there is no cover, there are only 5 sides left, and glass s=5*9=45 square decimeters is required; Volume = 3 * 3 * 3 = 27 cubic centimeters = 27 liters.

1. What is the volume of a cuboid piece of wood with a ridge length of 5cm?

It should be a cube, otherwise the conditions are insufficient. 5x5x5=125 If you make it into the largest cone, what is the volume of this cone?

1 3* (5 2) 2*5=125 122, a cylindrical barrel with a bottom radius of 10cm is filled with water, and a cone plumb with a bottom radius of 5cm is completely soaked in water, and the water surface rises by 1 m, what is the height of the plumb weight?

If it is up 1cm

Then 10 2*1 (1 3* *5 2)=123, make a fish tank without a lid, the edge length is 3dm, how many square decimeter glass do you need to make this fish tank?? Glass thickness is not counted. Glass is required.

The fish tank can hold 3*3*3=27 liters of water.