四年级小数加减法口算题.doc

文档介绍：-= 1-= ＋=
＋= 1-= -=
-= -= +=
+ = 6 -= -=
-= 1-= ＋=
＋= 1-= -=
-= -= +=
+ = 6 -= -=
+ = -3= -=
－= 1 －= ＋=
＋= －= -=
＋= －=

－=
+= -= +=
+= 3-= -=
-= 15-= -=
+= += +=
-99= += -=
+= -= +=
+= += +=
-= -= 5-=
+= += +=
+= += +=
+= += +=
+= += +=
+= -= +=
×4=
× 4=
× 4=
×= ×1000= ×100=
×25= 1000×= ×
100= ×8=
×2=
×6=

×=