37+68= 910-430= 18×50= 910÷70= ÷6=
724÷79≈ 9.3÷0.1= 1.08-0.52= 18×25%= 3- =
25×24= 910﹣570= 6.3÷0.9=
+ = + = ÷0.1=
0.25 0.04