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,有余数除法的试商,二,年级,数学,有余数除法的试商二年级 数学,1,15,个,1,5,3,5,5,3,15,15,0,15个,2,1,5,个,1,5,个,2,1527,1,7,15,14,72,1,余数,3,15,15,0,1,5,3,5,5,15个15个215271151 余数3 15,3,学具准备,学具准备,4,二年级数学下册有余数除法的试商人教版ppt课件,5,4,3个,7,个,/,次,43,个,胡,萝卜,,,每次运,7,个。,可以,运,几,次,?,还剩,几,个?,43个7个/次43个胡萝卜,每次运7个。可以运几次?还剩几,6,43个胡萝卜,每次运7个。,可以运几次?还剩几个?,437,43个胡萝卜,每次运7个。可以运几次?还剩几个?,7,请你独立,思,考,尝试列竖式计算,437,把,计,算过,程,写在,学,习单,上,。,请你独立思考,尝试列竖式计算437,把计算过程写在学习单,8,二年级数学下册有余数除法的试商人教版ppt课件,9,请你拿,出,学习,单,和准,备,好的,学,具,,摆一摆或者 画一,画,,,验,证,一下,,,哪一,个,是正,确,的,,如,果是,错,误 的,,试,着说一说错误出现在哪里?,请你拿出学习单和准备好的学具,摆一摆或者 画一画,验证一下,,10,琪琪,琪琪,11,余数一定要比除数小,1,次,1,次,1,次,1,次,1,次,1,次,东东,余数一定要比除数小1次1次1次1次1次1次东东,12,余数一定要比除数小,1,次,1,次,1,次,1,次,1,次,1,次,1,5,7,4,3,3,5,8,7,1,4376(,次,),1(,个),丁丁,余数一定要比除数小1次1次1次157433584376,13,余数一定要比除数小,1,5,7,43,35,4376(,次,),1(,个),8,7,1,余数一定要比除数小14376(次)1(个)8,14,运走的,7,7,49,不够了,菲菲,?,小刚,1,次,1,次,1,次,1,次,1,次,1,次,运走的 7749不够了菲菲?小刚1次1次1次1次1次1次,15,丁丁,丁丁,16,7,43,文文,想:,7,和,()相乘的 积接近,43,,而,且小于,43,。,七七,四,十九,7,7,43,49,六七,四,十二,6,7,43,42,1,437,6,1,7 43文文想:7和()相乘的 积接近43,而七七四十九,17,六七,四,十二,6,7,43,42,1,婷婷,7,43,五七,三,十五,5,7,43,35,8,437,6,1,想,:(五),七,三,十,五,,8,大,于,7,,,再,想(,六,)七,四,十 二,,1,小,于,7,,所以,商6,。,六七四十二7 431婷婷7 437 438437,18,有余数除法的试商,437,6(次,),1(,个),6,7,43,42,1,有余数除法的试商,19,二年级数学下册有余数除法的试商人教版ppt课件,20,二年级数学下册有余数除法的试商人教版ppt课件,21,5次,6次,7,次,7,5=,3,5,3543,7,6=42,4243,49,43,77=49,5次6次7次75=3576=42494377=49,22,5次,6,次,7次,75=35,3543,76=42,4243,77=49,4943,4次,74=28,2843,73=21,2143,3次,7,(,),43,5次6次7次75=3576=4277=494次74=,23,试商,的,时候,需,要注,意,什么?,琪琪,两个,数,相乘,的,积,,要,接近,被除,数,,但,小,于被,除,数。,婷婷,余数,要,比除,数,小。,7,43,42,1,4376(,次,),1(,个,),6,试商的时候需要注意什么?琪琪两个数相乘的积,要接近 被除数,,24,里最大能填几?,8,33,8,325,(,八,),九,七,十二,(,七)九,六,十三,轩轩,洋洋,9,6,62,9,和,(,6,),相乘的积最接近,62,,而且,小,于62。,里最大能填几?8338 325(八)九七十二轩,25,瑶瑶,(三,),八二,十,四,(四,),八三,十,二,3233,里最大能填几?,8,325,9,6,62,4,833,3?,瑶瑶(三)八二十四 里最大能填几?8 3259,26,8,3,25,24,1,7,8,里最大能填几?,8,325,9,6,62,4,833,8325178里最大能填几?8 32596,27,里最大能填几?,9,6,62,6,4,833,4,8,325,8,3,2,5,9,6,2,8,3,3,2,4,5,4,3,2,1,8,1,里最大能填几?96 624 8338 3,28,37,37,5,5,猜一猜,盖住,的,是一,位,数,分,别,是几?,和,3737 55猜一猜盖住的是一位数,分别是几?和,29,37,5,37,5,猜一猜,可以是,6,、,7,、,8,、9,37 537猜一猜可以是6、7、8、9,30,6,6,37,36,1,37,猜一猜,37,5,5,6,7,8,9,6,5,37,30,7,663737猜一猜37 5566537,31,猜一猜,6,6,37,36,1,6,和几,相,乘的,积,接近,37,,而且,小,于,37,。,37,5,5,6,7,8,9,37,猜一猜66376和几相乘的积接近37,而且小于37。37,32,7,37,35,2,9,4,37,36,1,37,猜一猜,37,5,5,5,6,7,8,9,737943737猜一猜37 556,33,8,4,3,7,3,2,5,8,4,37,猜一猜,37,5,5,6,7,8,9,8437325 837猜一猜37 556,34,有余,数,除法,的,试商,我,学会了,怎,样试,商,宁宁,我,发现用,摆,一,摆,画,一画的,方,法,想,问题特,别,好,佳佳,有余数除法的试商我学会了怎样试商宁宁我发现用摆一摆,画一,35,6,20,用你,的,学具摆,一,摆,方,框,里的数分,别,是几?并说一说你是怎样,想,的,?,2,0,6,620206,36,再,见,再 见,37,
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