=9+4
=13
=25×8×2
=200×2
=400
=8+24
=32
4.8-2.8=
37.2+13.8=
0.5×0.5=
0.4+0.12×10=
1.2÷100=
0.7+0.7-0.7+0.7=
8.593×0=
(1.5+0.25)×4=