二年级数学加减法练习题百以内精编

二年级数学加减法练习题(百以内)65 - 48 =52 - 49 =92 - 71 =71 - 16 =94 - 57 =39 - 7 =57 - 47 =93 - 27 =29 - 7 =87 -