有用的小学到初中所有数学公式大全（Useful mathematics from elementary school to junior middle school）.docVIP

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有用的小学到初中所有数学公式大全（Useful mathematics from elementary school to junior middle school）.doc

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有用的小学到初中所有数学公式大全（Useful mathematics from elementary school to junior middle school）

有用的小学到初中所有数学公式大全（Useful mathematics from elementary school to junior middle school） 1, the number of copies of each number x = total number, each number of copies, copies number = = each number 2, 1 times of a few a few multiples of multiples of multiples of x = 1, = several multiples of multiples of multiples of multiples / = 1 times 3, speed time distance, distance = x = distance / time time speed = speed 4, the number of the total price, price x = = = the number of total number of unit price, unit price 5, work efficiency * working time = total amount, total work efficiency = working time The total amount of work, work time = work efficiency 6, the addend addend = + and - addend = other addend 7, the minuend - = = - difference difference reduction minuend difference + = minuend meiosis meiosis 8, factor X factor = product divided by a factor = another factor 9, dividend, dividend, divisor = business taking = x = dividend dividend divisor quotient Mathematical formulas for elementary school mathematics 1, square: C perimeter, S area, a length side length = perimeter = 4C=4a area = length side * S=a * a 2, the cube: V: volume a: edge length surface area = length x length x 6 S =a * a * 6 Volume = edge length x x long * x V=a x a * a 3, rectangle: C perimeter, S area, a, side length, perimeter = (length + width) * 2 C=2 (a+b) area = * * width S=ab 4, cuboid V: volume s:, area a: long, b: width, h: height (1) surface area (length * width + length * height + width * height) * 2 S=2 (ab+ah+bh) (2) volume = long * width * high V=abh 5, triangle S a h high end area bottom area = x height / 2 s=ah / 2 Triangle area high = x 2 / bottom Triangle area = x 2 / high 6, parallelogram: s area a, bottom h, high area = bottom * high s=ah 7, ladder: s area a b h high bottom bottom area = (+ down on the bottom end) * / 2 s= (a+b) * H / 2 8 round: S C d= r= diameter radius circumference pi (1) = =2 * * * perimeter diameter radius C= d=2 pi pi pi * r (2) * * * area = radius radius 9,