1、人教版四年级四则混合运算练习题72-44+85 98736 63987 98-46+25 48123 24+24+242 242+242 5675 306+28203-1359 28+1208 97-126+43264-1255 751228035 180(126)95(64-45) (3816)24 (2614)827030-18030 (270-180)30 100-(54+6) 42+6(12-4) 42+612-4 240(20-5)(37-15)(8+14) (850-100)3 56-(25+17)(15+20)6 (59+23)(968) 72-463(124-85)1226 7
2、5+36020-5 1200-20183540-3153 150-(67+83)26 45+555-2060+240(32-26) 480(144-9608) (850+100)3 32513(266-250) 135+65(15-7) 95(64-45)(135+65)(15-7) 5016040 120-14418+35 (58+37)(64-95) 178-14556+42 21+(327-23)1985+14(14+20826) 8282312-48 18-15+10185418+413 1658016 640+36060+4072-44+85 98-46+25 120+1806298736 242+242 203-135928+1208 97-126+43 264-1255