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A: -6,2:3,1-(-2,1×10)=-62:31-(-21)=-2+21=19
C: 2×[3 1/4-(-3,75)]×3,5=2×[3,25+3,75]×3,5=2×7×3,5=7×7=49
D: 3×(-10)²+(-3)³=3×100+(-27)=300-27=273
F: (-9)×(-8)-5×(-10²)=72-5×(-100)=72+500=572
H: (-0,2)×(-100)-4 1/2×2/3=20-9/2×2/3=20-3=17
I: (-2,7-3:10)³×(-1)=(-3)³×(-1)=-27×(-1)=27
Pionowo:
B: 2+(-4 1/2)×(-20)=2+(-9/2)×(-20)=2+90=92
C: -10×(1 1/5-5,5)=-10×(1,2-5,5)=-10×(-4,3)=43
E: -7×(-10²)-(-7)=-7×(-100)+7=700+7=707
F: 28,5×(-3,2-0,8)/-2=28,5×(-4)/-2=-114/-2=57
/ to jest kreska ułamkowa
G: (-2,6):0,26+1/2×8²=(-260):26+1/2×64=-10+32=22