3.
9×(3+8)=9×11=99(v1)
9×(3+8)=9×3+9×8=27+72=99(v2)
2×(7+5)=2×12=24(v1)
2×(7+5)=2×7+2×5=14+10=24(v2)
7×(10+1)=7×11=77(v1)
7×(10+1)=7×10+7×1=70+7=77(v2)
(9+4)×3=13×3=39(v1)
(9+4)×3=3×9+3×4=27+12=29(v2)
(10+2)×4=12×4=48(v1)
(10+2)×4=10×4+4×2=40+8=48(v2)
(8+6)×2=14×2=28(v1)
(8+6)×2=2×8+2×6=16+12=28(v2)
(20+2)×4=22×4=88(v1)
(20+2)×4=20×4+4×2=80+8=88(v2)
(30+1)×3=31×3=93(v1)
(30+1)×3=30×3+3×1=90+3=93(v2)
(0+1)×64=1×64=64(v1)
(0+1)×64=0×64+1×64=0+64=64(v2)
