0.8+0.16=
155-(55+79) =
8-5.7=
443-28-72=
1.87-0.7=
13.8-5.09=
0.854×100=
1800÷25÷4=
3.05+0.5=
0÷0.155×0.89=
25×17×4=
22.7+3=
9+6.6=
0.28÷10=
13×4÷13×4=
1.01-0.9=