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