Majatwardowska2544viz
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2. Oblicz a) 3-7-4-5 b) 6. (2 + 7) c) 10 - 6+12:3 e) 100-2-(13-7) f) 23-12:(2-3) g) 10.6+12:3+1 h) 5. (4+7) -6.3 1) 4²9 j) 52-23 b) (5-3)2.42 D 70 - (7-4):3 d) 15+ 16:4.2​

2 Oblicz A 3745 B 6 2 7 C 10 6123 E 1002137 F 231223 G 1061231 H 5 47 63 1 49 J 5223 B 53242 D 70 743 D 15 1642 class=

Odpowiedź :

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!