一瓶汽水4元-V:]0?;q*b-c:I3k-g6u5h.~(W
一袋饼干6元-V:]0?;q*b-c:I3k-g6u5h.~(W
一盒糖20元-V:]0?;q*b-c:I3k-g6u5h.~(W
(1)一盒糖比一袋饼干贵多少元钱?-V:]0?;q*b-c:I3k-g6u5h.~(W
算式:提示3P2y6e+Z3i9p7{8D;v+{)B4t'~,?)f-V:]0?;q*b-c:I3k-g6u5h.~(W
答:一盒糖比一袋饼干贵+F+]0s,v5}(?8]6u:E)]9y元钱。-V:]0?;q*b-c:I3k-g6u5h.~(W
(2)买一盒糖的前够买几瓶汽水?-V:]0?;q*b-c:I3k-g6u5h.~(W
算式:提示:]-I+U9[(b)V6}/b.b-V:]0?;q*b-c:I3k-g6u5h.~(W
答:买这三样食品共需/X9G*n*I元钱。-V:]0?;q*b-c:I3k-g6u5h.~(W