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为了让大家能够更好地解决数学问题,较好地掌握解题技巧,动物王国备受尊敬的大象在森林广场上举行了一场“数学讲坛”活动,邀请动物界的一些“名师”交流解题方法。长颈鹿站得高,看得远。他说:“在解决‘在一道减法算式中,如果被减数减少15,减数增加15,差发生怎样的变化’这类数学问题时,要用假设法,用这种方法解决数学问题,能够使模糊的数学问题变得清晰。”长颈鹿伸了伸脖子,踢了踢小脚,神秘地说:“假设被减数是100,减数是50,差就是50。被减数减少15是85,减数
In order to enable everyone to better solve mathematical problems, better grasp the problem-solving skills, animal kingdom respected elephants held a ”math forum“ activity in Forest Square, inviting some of the animal world ” Teacher “exchange problem-solving method. Giraffe standing high, far away. He said: ”To solve the mathematical problem of reducing subtraction by 15, subtraction by 15, and difference by what kind of subtraction in a subtraction formula, we should use hypothetical methods to solve mathematical problems in this way , Can make fuzzy math problems become clear. “” Giraffe stretched his neck and kicked the foot, mysteriously said: "Suppose the number of subtractions is 100, the subtraction is 50, the difference is 50. By reducing the number of decreases 15 is 85, minus the number