1)
A= (+9)×(+7)=
=>9×7
=>63
B=(+6)×(+13)=
=>78
C=(-14)×(+4)=
=>-(14×4)=
=>-56
E =(-8)×(+12)=
=>-(8×12)=
=>-96
F=(-16)×(-5)=
=>16×5=
=>80
G=(-4)×(-32)=
=>4×32=
=>128
I=(-4)×(-4)=
=>4×4=
=>16
J=(+13)×(+13)=
=>169
K=(-13)×(-13)=
=>13×13=
=>169
2) A = 5 × ( +3)=
=>5×3=15
B= (+11)×4=
=>44
C=7×5=
=>35
E=15×(-4)=
=>-(15×4)=
=>-60
F = 2×(-9)=
=>-(2×9)=
=>-18
G=-14×6=
=>-(14×6)=
=>-84
I=-25× (-2)=
=>25×2=
=>50
J=134×1=
=>134
K=325×(-1)=
=>-(325×1)=
=>-325
M=2000×0=
=>0