20加法口诀表.ppt

文档介绍：10 以内的加法口诀表 1+ 1= 2 1+ 2= 3 2+ 2= 4 1+ 3= 4 2+ 3= 5 3+ 3= 6 1+ 4= 5 2+ 4= 6 3+ 4= 7 4+ 4= 8 1+ 5= 6 2+ 5= 7 3+ 5= 8 4+ 5= 9 5+ 5=10 1+ 6= 7 2+ 6= 8 3+ 6= 9 4+ 6=10 1+ 7= 8 2+ 7= 9 3+ 7=10 1+ 8= 9 2+ 8=10 1+ 9=10 相加等于 10 的组合= = = = = = = = = 10 10 10 10 10 10 10 10 10 1 2 3 4 5 6 7 8 9 9 8 7 6 5 4 3 2 1 + + + + + + + + + 个位数加 1 1 2 3 4 5 6 7 8 9 + + + + + + + + + 2 1 1 1 1 1 1 1 1 1 = = = = = = = = = 3457689 10 个位数加 2 1 2 3 4 5 6 7 8 + + + + + + + + 2 2 2 2 2 2 2 2 = = = = = = = = 3457689 10 个位数加 3 1 2 3 4 5 6 7 + + + + + + + 3 3 3 3 3 3 3 = = = = = = = 457689 10 个位数加 4 1 2 3 4 5 6 + + + + + + 4 4 4 4 4 4 = = = = = = 56789 10 个位数加 5 1 2 3 4 5 + + + + + 5 5 5 5 5 = = = = = 6789 10 个位数加 6 1 2 3 4 + + + + 6 6 6 6 = = = = 789 10 个位数加 7 1 2 3 + + + 7 7 7 = = = 89 10 个位数加 8 1 2 + + 8 8 = = 9 10