What objects in life are 1 square centimeter, 1 square decimeter, 1 square meter?

Your nails are about one square centimeter
The switch of the light on the wall of the room, the plastic box is about one meter of a bungalow
If there are marble bricks in the classroom, one is about one square meter

RELATED INFORMATIONS

1. What are the items of 1 square decimeter and what are the items of 1 square meter
2. In the brackets below, fill in the appropriate band fraction 90 points = (), 1132m = () km 109 Jiao = () yuan 106 square cm = () square decimeter Pay attention to the score!
3. 2 hours 20 minutes = () hours 90 minutes = () hours 119 square minutes = () square meters 3 yuan 5 jiao=
4. 206cm = () m 425 square cm = () square decimeter (with band fraction)
5. How many square decimeters is 2044 square centimeter
6. How many square meters is 35.06 square meters
7. 2.06 square meters = () square meters () square decimeters 4700 kg = () tons () △ 20 = four fifths = 1.6: () = ()% = ()
8. The sum of positive three and one third plus negative two fifths Negative two seventh, positive two thirds, negative one third, negative two sixth Given | m | = 1, | n | = 2, find the value of M + n
9. -Three and two thirds + - 2.4 - negative one third - negative four and two fifths
10. Simple operation of 15x (two thirds + two fifths) Wrong number, 15x (two thirds - two fifths) Simple operation
11. A rectangular piece of paper is folded in half three times in a row. What is the area ratio of one piece of paper to the other
12. Fold a 20 cm long, 16 cm wide rectangular paper in half for three times to get a rectangle. What's its area? Write the process clearly
13. Fold a two fifths square paper into a rectangle with a circumference of () decimeters and an area of () square decimeters
14. A piece of rectangular paper with an area of 2 square meters is folded in half for three times to get an area of? The rectangle obtained after folding three times is one eighth of the original rectangle and one fourth of its area. Why?
15. The area of a piece of paper is four fifths of square meters. After folding it twice, how many square meters is the area of one of them? What about the third time? If B of a times m is less than m, then a is greater than or less than B
16. As shown in the figure, the area of the rectangle is 70 square centimeters, the upper bottom of the trapezoid is 3 / 7 of the length of the rectangle, and the lower bottom is 4 / 5 of the length of the rectangle
17. The area of the rectangle is two fifths of the area of the shadow part, and the area of the shadow part is two fifths of the area of the rectangle
18. The shadow accounts for two fifths of the triangle and three twentieth of the rectangle. The area of the triangle is 40 square centimeters less than that of the rectangle. What is the area of the rectangle
19. The area of the rectangle is 2 / 5 square meters, and the area of the shadow part is 2 / 5 of the area of the rectangle
20. A rectangle is five fifths of its length and three fifths of its width. What is its perimeter and area?