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,新北师大版一年级下册 练习三,7,6 0,+,7,6,为了美观，把数位多的数字放在上面,67,7,6 0,+,7,6,67,1 4,7 6,-,2,6,62,7,6 0,+,7,6,67,1 4,7 6,-,2,6,62,4 3,2 0,+,3,6,63,7,6 0,+,7,6,67,1 4,7 6,-,2,6,62,4 3,2 0,+,3,6,63,3,5 7,-,4,5,54,24,30,54,78,30,48,80,96,56,44,37,36,52,45,6,9,7,6,4,9,9,4,97,88,57,57,=,41,42,46,82,77,78,46,56,把个位当成加法算了,相同数位没对齐,把十位当减法算了,(1) 22+6=28(元),(2) 23 20 还差3元,(3) 大数减小数 23-20=3,(1)2 2 + 3 6= (节),(2)2 2 - 1 2=1 0 (节),计算完了要和100元比一比,9,2,1,3,9,9,5,2,22,15,16,17,18,41,51,61,71,81,33,44,55,66,77,88,99,66,77,88,99,41,51,61,71,81,11,12,13,14,15,16,17,18,今天你学到什么？,
