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一、复习建议 量与计量是小学数学教学的重要内容之一。小学数学最常用的法定计量单位主要包括:长度单位米、分米、厘米、毫米和千米（公里）;面积单位平方米、平方分米、平方厘米和平方千米（平方公里）;体积、容积单位立方米、立方分米、立方厘米、升和毫升;质量（重量）单位克、千克和吨;货币单位元、角、分;时间单位时、分、秒和年、月、日。
First, review the amount of recommendations and measurement is an important part of primary school mathematics teaching. The primary statutory units of measurement for primary school mathematics include: Units of length in meters, decimeters, centimeters, millimeters and kilometers (km); Area Units in square meters, square decimeters, square centimeters and square kilometers (square kilometers) Volume units are cubic meters, cubic decimeters, cubic centimeters, liters and milliliters; mass (weight) grams, kilograms and tons; currency unit yuan, angle, minutes; hours, hours, minutes, seconds and year, month, day.