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Anonymous users2024-02-08Formulas containing equal signs are called equations. Equations can be divided into contradictory equations and conditional equations. The same integer is added (or subtracted) to both sides of the equation, or both sides of the equation are multiplied or divided by the same non-0 integer at the same time, and the equation still holds.
The form is to connect two equal numbers (or numbers represented by letters) with "=".
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Anonymous users2024-02-07The most complete mathematical formulas for primary school are as follows:1. The circumference of the rectangle = (length + width) 2, c = (a + b) 2.
2. The circumference of the square = the side length 4, c=4a.
3. The area of the head of the rectangle = length and width, s = ab.
4. The area of the square = the length of the side The length of the side.
5. The area of the triangle = the height of the base 2, s=ah 2.
6. The area of the parallelogram = base height, s=ah.
7. The area of the trapezoid=(upper bottom + lower bottom) height 2, s=(a+b)h 2.
8. Diameter = radius 2, d = 2r, radius = diameter 2, r = d 2.
9. The circumference of the circle = pi diameter = pi radius 2, c = d = 2 r.
10. The area of the circle = pi radius radius.
11. The area of the triangle = base height 2, and the formula s=a h 2.
12. The area of the square = the length of the side The length of the side, the formula s=a a.
13. The area of the rectangle = length and width, and the formula s=a b.
14. The area of the parallelogram = the height of the base, and the formula s=a h.
15. The area of the trapezoidal = (the bottom of the upper eggplant code + the bottom of the bottom) is 2, and the formula is s=(a+b)h 2.
16. Sum of internal angles: The sum of the internal angles of the triangle = 180 degrees.
17. The volume of the cuboid = length, width and height, and the formula v=abh.
18. The volume of the cuboid (or cube) = the base area is high, and the formula v=abh.
19. The volume of the cube = edge length edge length edge length, formula v = aaa.
20. The volume of the cone = 1 3 The bottom area is high, and the formula v = 1 3sh. Na Raid.
21. The area of the circle = radius radius, the formula s= r2.
22. The surface area of the cylinder: The surface area of the cylinder is equal to the circumference of the bottom surface multiplied by the height, and the formula s=ch= dh=2 rh.
23. The surface area of the cylinder: The surface area of the cylinder is equal to the circumference of the bottom surface multiplied by the height plus the area of the circle at both ends, and the formula is s=ch+2s=ch+2 r2.
24. The volume of the cylinder: The volume of the cylinder is equal to the base area times the height, and the formula v=sh.
25. The circumference of the circle = diameter, and the formula l= d=2 r.
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Anonymous users2024-02-06The elementary school math formula is as follows:1. The circumference of the rectangle = (length + width) 2, c = (a + b) 2 2, the perimeter of the square = the side length 4, c = 4a
3. The area of the rectangle = length and width, s=ab
Fourth, the area of the square = the length of the side of the side of the length , s = a 2<>
5. The area of the triangle = the height of the base 2, s=ah 2 6. The area of the parallelogram = the height of the base, s=ah
7. The area of the trapezoid = (upper bottom + lower bottom) height 2, s = (a b)h 2 8. Circumference of the circle = pi diameter = pi radius 2, c = d = 2 r 9. area of the circle = pi radius radius r 2
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