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分数应用题是小学数学教学的重要内容之一。分数应用题中的“数”与“量”都比较抽象,且数量之间的逻辑性、灵活性较强。因此,小学生在解答分数应用题时要比整数应用题图难得多。能否正确解答分数应用题。关键是否找对“标准量”,也就是被看作单位“1”的量;这一点是学生学习分数应用题的难点。如何突破难点,把握关键? 一、从整数乘、除法应用题入手,找出规律,确定“标准量”。其基本形式有:
Application of fractional questions is an important part of primary school mathematics teaching. The “number” and “quantity” in the score application are abstract, and the logic between them is more flexible. As a result, pupils are far more difficult to solve than fractional application questions than integer application questions. Can correct answer scores application questions. The key is to find the “standard amount”, which is regarded as the unit “1” amount; This is the difficulty of student learning scores application questions. How to break through the difficulties, grasp the key? First, from the integer multiplication, division application questions to start, find out the law, to determine the “standard amount.” Its basic form is: