小猪盖房子,用了75块红砖,25块石头。-v:?-}3d2X)z3?9a+R1R,]0d0i
(1)小猪的房子一共用了多少块红砖和石头?-v:?-}3d2X)z3?9a+R1R,]0d0i
算式:提示5L+G5X(a+S-v:?-}3d2X)z3?9a+R1R,]0d0i
答:小猪的房子一共用了2]3T8S7V9c,k:?9R'S9W1b:e3k块红砖和石头。-v:?-}3d2X)z3?9a+R1R,]0d0i
(2)用的红砖比石头多几块?-v:?-}3d2X)z3?9a+R1R,]0d0i
算式:提示.Z1N;@6`+e0o'W3i7H8X8r-v:?-}3d2X)z3?9a+R1R,]0d0i
答:用的红砖比石头多2p(~3w'F(Z0h-b0L/T7x,_/g8b块。-v:?-}3d2X)z3?9a+R1R,]0d0i