$6=\sqrt{36}$
$\sqrt{36}<\sqrt{49}<\sqrt{64}<\sqrt{67}$
$6<7<8<\sqrt{67}$
Ответ: 7 и 8

$\sqrt{14}<\sqrt{16}<\sqrt{25}<\sqrt{36}<\sqrt{49}<\sqrt{52}$
$\sqrt{14}<4<5<6<7<\sqrt{52}$
Ответ: 4; 5; 6; 7.

$-4,9=-\sqrt{24,01}$
$-\sqrt{53}<-\sqrt{49}<-\sqrt{36}<-\sqrt{25}<-\sqrt{24,01}$
$-\sqrt{53}<-7<-6<-5<-\sqrt{24,01}$
Ответ: −7; −6; −5.

$2,7=\sqrt{7,29}$
$-\sqrt{31}<-\sqrt{25}<-\sqrt{16}<-\sqrt{9}<-\sqrt{4}<-\sqrt{1}<-\sqrt{0}<\sqrt{1}<\sqrt{4}<\sqrt{7,29}$
$-\sqrt{31}<-5<-4<-3<-2<-1<0<1<2<\sqrt{7,29}$

Ответ: −5; −4; −3; −2; −1; 0; 1; 2.