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教学正比例应用题,如五年制数学课本第十册67页例4:“一辆汽车2小时行驶64公里,照这样的速度,从甲地到乙地共行驶5小时。甲乙两地之间的公路长多少公里?”一般
Teaching Proportion Propositions, eg Five-Year Math Text Book, Volume 10 Page 67 Example 4: “A car travels 64 kilometers in two hours and at such a speed runs a total of five hours from A to B.” How many km long road? "General