①3x﹣5=10 ②= ③x:=:
-0.375=
4-1÷=
125×42=
×=
0.83-0.3=
0.32÷4=
÷=
2-=
1÷20%×0.6=
×8÷=
523﹣23×7
4.97+6.38+5.03﹣4.38
60×()
×3.2+5.6×0.5+1.2×50%
()÷
①÷[(+)×]
②86×+14×0.25
③19.1-5.7-4.3+1.9
④24×(+-)
+÷+ 43×-31÷ (90+)×
++++……+
9.9×5.9 60 1