2 ０以内进位加法分式练习 8 +4= 7 ＋ 6 = 6 ＋ 8 = 7+ 7=９ ＋4= 6 ＋ 6 = 7 ＋ ８ ＝ 9+ 7=8 +８＝ 7 ＋ 4 ＝ 5 + 8 = 4+ ７＝8 ＋9= ９ + 3 = 8 + 3 = 7+ 5＝ ６ +5= 3 ＋ ９ = 4 + 7 = 6+ 6=2 ＋９＝ 9 + ６ = 9 + 9 = ５+ ７=7 +8= ４ + ８ = 5 ＋ ８ = 8+ 7＝８ ＋8= 9 + 5 = 7 + ５ = 6＋ 8=２ 0 以内退位减法分式练习１ 7 － ６ ＝ 12 - 8 = 20 - 6 ＝１ 1 - 6 ＝ 14 - 7 ＝ 1 ３ - ９ =15 - ８ = 1 ８ - 9 = １６ - 7 =12 - ７ = 11 － ９ = 20 - ７ =13 - 8 = １ 5 - 7 ＝ 11 - 7 =１ 2 - ８ = 1 ７ - 9 = 1４ － 7 ＝
