下面介绍几种简便的地亩计算方法。一、已知土地的长和宽(单位是米),求亩数:长×宽×15,得数的小数点向左移四位。例如:测得一块地长66.7米,宽10米,代入上式得66.7×10×15=10005,移小数点后即为1亩。还有一种方法是:长×(宽+(1/2)宽),得数的小数点向左移三位即得亩数。二、已知平方米数,换算成亩数:平方米数+ Here are some simple ways to calculate acreage. First, the known land length and width (in meters), seeking acres: length × width × 15, the decimal point to the left four. For example: a piece of land measured 66.7 meters long, 10 meters wide, substituted into the formula was 66.7 × 10 × 15 = 10005, after the decimal point is 1 acre. Another method is: length × (width + (1/2) width), the number of decimal places to the left to get three acres that number. Second, the known number of square meters, converted into acres: the number of square meters +