8+2.2=
1.5×6=
17+78= 810-450= 16×40= 910÷70=
÷60%= 3.8+6.2= 2.01-0.45=
12.6÷6= 632÷89≈ 499×21≈ 8.1÷3=
- = 10-1.05= 32÷24×0= 7.18×99+7.18=