Doplň chýbajúce čísla v číselných radoch:
4, 8, 16, , , 28, , 36
64, , 48, 40, , , 16
, 27, 36, , 54, 63,

6 . 8 =	. 4 = 36	7 . = 42	20 : 2 =	40 : = 8
3 . 4 =	2 . = 16	. 5 = 20	45 : 9 =	100 : = 10
6 . 9 =	8 . = 56	. 3 = 9	81 : 9 =	: 7 = 4
6 . 1 =	. 3 = 24	10 . = 60	16 : 2 =	: 9 = 7