小学初中高中所有数学公式（All the mathematical formulas of middle school high school）.docVIP

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小学初中高中所有数学公式（All the mathematical formulas of middle school high school）.doc

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小学初中高中所有数学公式（All the mathematical formulas of middle school high school）

小学初中高中所有数学公式（All the mathematical formulas of middle school high school） Calculation formula of mathematics in primary school: 1 cubic decimeter = 1 liter 1 cubic centimetre = 1 milliliter 1 cubic meter = 1000 liters Weight unit conversion 1 ton = 1000 kg 1 kilogram = 1000 grams 1 kilogram = 1 kg Unit conversion of RMB $1 = 10 Angle 1 Angle = 10 1 = $100 Time unit conversion 1 century = 1 year 1 year = 12 months The big month (31 days) has: 1\3\5\7\8\10 \ December Xiao yue (30 days) : 4\6\9 \ November It was February 28, and the leap year was February 29 It is 365 days in a year and 366 days in a leap year 1 day = 24 hours 1 hour = 60 minutes 1 point = 60 seconds 1 hour = 3600 seconds The calculation formula of the circumference area of the geometric figure of elementary school mathematics The circumference of the rectangle = (length + width) x 2 C = (a + b) * 2 The perimeter of the square is equal to the side length x 4 C = 4a 3. Area of rectangle = length x width S = ab The area of the square is equal to the length of the side The area of the triangle is equal to the base x height The area of the parallelogram is equal to the base x height S = ah The area of the trapezoid is equal to (top bottom + bottom) x height = (a + b) h = 2 8. Diameter = radius x 2 d = 2r radius = diameter and 2 r = d 2 The circumference of the circle = PI (PI) = PI (PI) = PI (PI) = PI (PI) = 2 PI r 10. The area of the circle = PI (PI) radius x radius Common middle school math formula: One after two has only one line The shortest line segment is between two points The supplementary angles of the same Angle or equal Angle are equal The remaining angles of the same Angle or equal Angle are equal Its a little bit and theres only one line thats perpendicular to a given line The shortest of the vertical segments is in all the segments connected to each point in the line Parallel axioms go through a line, and theres only one line thats parallel to this line If both lines are parallel to the thir