分数加减法口算练习题5251= 8385= 3121= 2143= 8381= 9485= 7687= 9798= 3195= 52-101= 32 -21= 41+ 31= 52 -51 =1- 85 = 21- 41= 12 -16 =57 -37 = 13 +17 = 13 -15 = 45 + 25 = 10121= 15153= 114117= 3265=411= 712 +512 = 14 -15 = 3-59 = 3231= 31+ 41= 94+95= 21+ 41= 991010= 113118= 3161= 7191= 5121= 92 +95= 1- 76= 53 + 54 =107 -103 = 85 -41 = 109- 103= 1- 94= 81 + 41 = 31 -41 = 21 - 31 = 74 -71 =1- 72= 101+103= 83+ 85= 61+65=78 +12 = 14 + 41= 45 -23 = 31+ 61=5-14 = 81+ 85= 1- 101= 2-75 =6+ 81= 78 + 58 = 2 -23 = 56 ―712 =14 +81 = 15 ―17 = 32 + 61= 51-81=29 +49712 ―112 = 32 + 94= 1-45 -15=512 - 112 = 34+12712 ― 13 = 6-811= 12 +3= 97 -94 = 65 -32 = 21 -41= 87 -83 = 101 +52 = 31 +51 = 83 -41 =32 +31 = 125 -125 = 109 -101 = 54 -52 =83 +83 = 21 -51 = 74 +73 = 61 + 31 =21 -81= 1- 87 = 1- 125 = 53 +21 =65 +65 = 109 -10