1三年级数学下册四则混合运算练习(135+75)(145) 1024163120-6055 1200-2018(135+415)5+16 (360-144)243240+480302 225-10(6+13)(1202+120)9 164-135+85330(65-50) 1996-96274 264(12+6513) 594045(798-616)(31540-364)7 125208(12111)(2010-906)(65+15) (20+12024)8 1069-769 11713+3615377437(65+35) 540-(148+47)13 594045(798-616) 21(230-1924)31996-96274 10000-(59+66)64 735(700-40025) (31540-364)7 1520-(1070+282) 920-1680407690+4752-398 148+332864-753602432+730 2100-94+4854(247+18)2725 36-720(36018)
