Odpowiedź:
2.
a) 48- 16= 32
b) 9x7 = 63
c) 80+3= 83
d) 50- 6 x 3= 50-18= 32
e) 3 x 7- 4= 21- 4= 17
3.
a) 64+ 16= 80
b) 36 + 3x8= 36 + 24= 60
c) [tex]5^{2}[/tex] + 45 = 25 +45 = 70
d) 6x (16+8)= 6x 24= 144
4.
(20+3) x 5+7x4
20+3 x (5+7)x 4=
20 + 3 x 5 + (7x4)=
