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有理数的加法在生活中随处可见,快来看看下面几个实例吧.例1悟空随师父去金光寺扫完宝塔回来,师父累得满头大汗,八戒见状,忙端茶上前,关切地问道:“师父,累成这个样子,您这是扫了多少地啊?”还未等唐僧说话,悟空抢言道:“八戒,你算算吧,共扫了六层,以100m~2为标准,每层超过标准的记为正数,不足标准的记为负数,记录如下(单位:m~2):+30、+18、+10、0、-15、-25.”八戒看了后,说:“这咋算?”请你帮八戒算算师父共扫了多少地.
Rational addition of rational numbers in life can be seen everywhere, take a look at the following examples. Example 1 Goku with Master to sweep the pagoda back Golden Temple, Master tired sweating profusely, , Asked with concern: “Master, tired of this way, how much is your sweeping ah?” Not yet the monk to speak, Goku rumored: “Journey, you calculate it, swept altogether Sixth floor, with 100m ~ 2 as the standard, each layer exceeds the standard of the record as a positive number, less than the standard recorded as negative, recorded as follows (unit: m ~ 2): +30, +18, +10,0, -15 , -25. ”After I saw it, said: “ This ye?? ”Please help Master how much to calculate the total sweep of the Master.