中小学数学公式(国外英文资料).doc

中小学数学公式(国外英文资料) All the primary school to junior middle school mathematics formula 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 working efficiency = total working time, work time work = work efficiency 6, addend + and - (= addend addend) = another 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 The calculation formula of primary school mathematics figure 1, the C S area of a square perimeter length perimeter length = C=4a x 4 = length x area side length S=a * a 2, the volume of V: a: cube edge length surface area = length x length x 6 S =a * a * 6 volume = edge length edge length * * V=a * a * a edge length 3, oblong C S a the length of perimeter area The perimeter (length + width) x = 2 C=2 (a+b) Area = length * width S=ab 4, cuboid The volume of V: s: length b: width h: high a: area (1) surface area (L * W + + high length * width * height) * 2 S=2 (ab+ah+bh) (2) volume = length * width * height V=abh 5 triangle S a h high floor area Bottom area = x height / 2 S=ah / 2 Triangle area high = x 2 / bottom Triangle area = x 2 / high 6 parallelogram S a h high floor area Bottom area = x S=ah 7 ladder S a on the bottom area of the bottom of the B H Area = (+ down on the bottom end) * / 2 S= (a+b) * H / 2 Round 8 S C - d= r= diameter, perimeter area radius (1) = =2 * * * perimeter diameter pi * radius C= II d=2 II R (2) * * * ar