Cześć ;-)
Od a) do d)
[tex]3\cdot7-4\cdot5=21-20=\boxed1\\\\6\cdot(2+7)=6\cdot9=\boxed{54}\\\\10\cdot6+12:3=60+4=\boxed{64}\\\\15+16:4\cdot2=15+4\cdot2=15+8=\boxed{23}[/tex]
Od e] do h]
[tex]100-2\cdot(13-7)=100-2\cdot6=100-12=\boxed{88}\\\\23-12:(2\cdot3)=23-12:6=23-2=\boxed{21}\\\\10\cdot6+12:3+1=60+4+1=\boxed{65}\\\\5\cdot(4+7)-6\cdot3=5\cdot11-18=55-18=\boxed{37}[/tex]
Od i] do l]
[tex]4^2-9=16-9=\boxed7\\\\5^2-2^3=25-8=\boxed{17}\\\\(5-3)^2\cdot4^2=2^2\cdot16=4\cdot16=\boxed{64}\\\\70-(7-4):3=70-3:3=70-1=\boxed{69}[/tex]
Pozdrawiam!