1, two consecutive even numbers, the number A is 25% more than the number B, the number A is (), and the number B is ().
2. the rectangle is long b and wide a. If you revolve around a, a () body will appear in front of your eyes, where A is its () and B is its ().
3. Xiaohua drew a full-body sketch for his father at the ratio of 1: 8, and drew his father's height of 22.5 cm and his actual height of () cm.
4. Turn a square piece of paper with a side length of 65438±0cm into a rectangle according to the following rules:
(1) The circumference of a rectangle consisting of five squares is () cm;
(2) The circumference of a rectangle consisting of m squares is () cm.
5. Divide the bottom of the cylinder into many equal sectors, and then press right.
Cut the cylinder as shown in the figure, and then assemble it into an approximate cuboid.
It is known that the length of a cuboid is 6.28 cm and the height is 2 cm. The bottom radius of this cylinder is () cm, and the lateral area is ().
Second, choose
1. Ancient Greece believed that if a number is exactly equal to the sum of all its factors (except itself), then it is a "perfect number". For example, 6 has four factors: 1, 2, 3, 6. Besides 6 itself, there are three factors: 1, 2, 3. 6 = 1+2+3, which is exactly the sum of all factors, so 6 is a "perfect number". In the following figures, "perfect number" is ().
A. 12
2. We know that the product of several identical factors can be written in this form, such as 3×3=32, 8×8×8=83, 7×7×7×7=74, so 25= ().
a、 10 B、25 C、32 D、 16
Third, reading.
The following are two paragraphs from a diary written by Xiaomei. Please put a "-"under the mistake and correct it in its place. The first network of new curriculum standards
65438+1It will be sunny on Sunday, October 30th.
65438+1At 4: 30 pm on October 30th, my father and I flew to Kunming. After the plane took off, I put down the small table about 1.2 square meters in front of me, and asked the stewardess aunt to pour us a cup of Huiyuan juice about 200 liters, and took a nice sip. At 7: 30 pm, the plane landed at Kunming airport successfully. About four hours on the plane is really fast!
In Kunming, we visited the World Expo Park, Xishan Mountain and Cuihu Lake, visited the flower market and tasted snacks in Kunming. We had a good time. However, due to the tight time, there are still many scenic spots that I haven't had time to go. What a pity. So I said to my father, "I will come to Kunming for my summer vacation on June 3 1."
Fourth, solve the problem.
1, grandpa's medicine bottle label says "80 tablets, each tablet1g"; The doctor's prescription says "2 grams three times a day, each time, for 10 days". Do you think a bottle of medicine is enough? (explained by calculation)
In order to measure the volume of a potato, Nan Nan dipped the potato in a rectangular tank. When the potato was taken out, the water level in the water tank dropped by 6 mm ... Then he dipped a small cubic iron block with a length of 3 cm into the tank, and the water level in the tank rose by 3 mm. Do you know how big this potato is?