小数加减法口算题.doc

文档介绍：小数加减法口算题
-= += += += += -= += -= += -= += += -= -= -= -= += -= += +=
+= += += += += += -= -= += += -= += -= += -= += -= -= -= +=
-= -= -= -= += += += += -= -= -= += += += -= += += += -= -=
-= -= += += += += -= += += -= += += += += += -= += += -= +=
-= -= += += -= += += += -= -= += += += -= -= += -= += += -=
小数加减法口算题
+= 20+= += -3 = -= += 2-= += -= += -= 8 += -= 2 += += -= -= += -= 1-=
+= 1 -= - 4 = +4 = += 10-= 6+= -= 1-= +=