Question

我有两题不会做求求各位大虾帮帮忙

Answer 1

1.

1.2×3=3.6; 1.2×2=2.4; 1.2×5=6; 1.3×2=2.6; 1.3×4=5.2;

1.3×5=6.5; 1.4×3=4.2; 1.4×4=5.6; 1.5×2=3; 1.5×3=4.5; 1.5×4=6; 1.6×2=3.2; 1.6×3=5.4; 1.6×4=6.4

2.

13.2×15=198.0