1.计算。,200400,30006000,7050,800900,600400,90003000,12050,1700900,600,9000,120,1700,200,6000,70,800,(1)一共有多少袋麦子？,7008001500(袋),(2)麦子比稻谷多多少袋？,15001000500(袋),(3)你还能提出别的数学问题并解答吗？,问题：麦子和稻谷共有多少袋？,150010002500(袋),