减法的综合练习,56 9 =,56 9 =,40,16,7,10,46,1,47,47,56-9=,16-9=7,40+7=47,47,56-9=,10-9=1,46+7=47,47,24 6 =,40 9 =,54 7 =,63 8 =,81 4 =,60 3 =,18,55,31,77,47,57,5、,25,37,50,-5,-9,8,19,35,16,28,41,6、,还差多少把椅子？,4830 = 18（把）,7、,50,82,74,35,63,41,-6,70,53,43,95,84,21,-6,44,35,29,57,76,68,44,35,29,57,76,68,8、,61-5,49+7,82-9,55-7,49-2,53-5,80-7,92-50,73,56,48,9、,10、90连续减9，写出每次减得的差。,90,-9,81,-9,72,-9,63,54,-9,45,-9,36,-9,27,-9,90,81,72,63,54,45,36,27,11、,我们班借8个。,足球有24个。,还剩多少个足球？,248 = 16（个）,12、在里填上“”“”或“”。,13、湖边有22只船。,划走7只。,还剩多少只？,227 = 15（只）,小红参加数学比赛，和参加比赛的每个人握一次手。小红一共握了39次手。参加数学比赛的一共有多少人？,
