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6和7的一图四式,1,+,5,=,6,5,+,1,=,6,解决问题,提出问题,6,-,1,=,5,6,-,5,=,1,举一反三,2+5=7,5+2=7,7-2=5,7-5=2,课堂检测,1、看图写算式,3+4=7,4+3=7,7-3=4,7-4=3,6+1=7,1+6=7,7-6 =1,7-1 =6,6-2 =4,6-4 =2,4+2=6,2+4=6,2、我会看图写算式,3、连一连,3+4,5-2,2+3,0+4,7-3,4+2,7-0,6-3,5,7,6,4,7,3,4,3,4、你能根据下列每组数字写出两个加法和两个减法算式吗?,(1) 3 4 7,3,4,4,3,7,7,3,7,7,4,3,4,+,+,-,-,=,=,=,=,(2) 2 4 6,2,4,4,2,6,6,2,6,6,4,2,4,+,+,-,-,=,=,=,=,今日挑战,3,3,6,+,=,6,3,3,-,=,