Question

567:10
700*68
245-228
561+455

Answer 1

567:10=56,7
700 × 68 = 47600
245-228=17
561 + 455 = 1016

Answer 2

$567:10=\boxed{56,7} \\ 700*68=\boxed{47600} \\ 245-228=\boxed{17} \\ 561+455=\boxed{1016}.$