文档介绍：: .
－= =-=
-= -=
+=
-= -=
+0
×8＝ ×4＝
×0＝
×50＝ 30×＝
×3＝
×2＝ ×＝
×＝
×2= ×10= ×8=
×2=
×10= ×= ×20=
+=
+= ×2= －=
×=
6×= －= ×=
×100=
×= ×= ÷7=
×100=
÷= ×8= ÷=÷2=
÷28= ÷= ÷=
×9=
÷24= ×= +=
－=
÷4= ÷13= ÷5=
+=
10÷20= 24÷15= ×10=
×=
×= ×1000= ×=
×=
÷= ÷9= ÷=
÷2=
÷= ÷= ×100=
×8=
0. 56÷= ×4= ×=
÷=
×= ×= ×=
÷=
1÷= ×= ÷=
0÷=
×102= ÷= 5×=－=
÷ ÷= 5×=
24×=
×= ＋= ÷=
5÷=
÷= ÷= ÷5=
7×=
÷= －= ÷=
÷8=
×= 8＋= ×30=
×=
×= 0÷6= ÷=
÷=
2÷5= ＋5= ÷=
÷=
×= ＋= 8×=
÷=
＋= ÷28= 10÷20=
÷=
10－= ×= ＋=
÷=
×100= ×100= ÷2=÷9=
÷= ÷= 3÷5=
7×=
12÷= ×= ÷=
÷100=
＋= ×= －=
×=
84÷= ÷= ×16=
÷2=
＋= 16－= ÷13=
÷41=
×= ×= ×=
×6=
×= ÷= ÷=
21÷=
×=