1. 涓浠朵笂琛75鍏,涓鏉¤￥瀛愪笌涓浠朵笂琛ｇ浉宸5鍏,褰撹￥瀛愭瘮涓婅。璐垫椂,涓鏉¤￥瀛愬氬皯閽憋紵
浠庨樼洰涓鍙浠ュ緱鐭ワ紝涓浠朵笂琛75鍏冿紝瑁ゅ瓙姣斾笂琛ｈ吹浜斿厓锛岄偅涔堣￥瀛愬氨鏄75+5=80锛堝厓锛
绛:涓鏉¤￥瀛80鍏冿紒
2. 涓浠惰￥瀛48鍏,涓婅。鐨勪环閽辨槸瑁ゅ瓙鐨2鍊,涓鏉¤￥瀛愮殑浠锋牸閽辨瘮涓浠朵笂琛ｈ吹澶氬皯鍏
瑙ｏ細
48-48脳2
=48-96
=-48锛堝厓锛
绛旓細涓鏉¤￥瀛愮殑浠锋牸閽辨瘮涓浠朵笂琛ｈ吹-48鍏.
娉锛氫箣鎵浠ユ槸璐熷硷紝鏄鍥犱负涓婅。姣旇￥瀛愯吹锛屽簲璇ユ槸涓浠朵笂琛ｇ殑浠锋牸閽辨瘮涓鏉¤￥瀛愯吹48鍏冦