0.56÷0.8= = = =
5×( )= 30×= 0.53= 3﹣=
1 ÷0.15= 4.6+4= 3- =
2013+67= 63= 10.1-1=
= ×2÷ ×2=
4800÷240= 25×12= 16.5÷10%= + =
1- + = 0.3²= 1.02-0.43= 14÷ =
× = ×2÷ ×2=