①×56=
②
③0.4+=
④12÷=
⑤
⑥
⑦
⑧÷18 =
+=
1-=
++=
0.5+=
-=
2--=
86+124= ×63=49
2﹣= 1÷×=
10﹣3.6= 8.32÷4=
0.25×0.25= 0.38×90+3.8=