①1乘12等于12,即1×12=12;
②2乘6等于12,即2×6=12;
③3乘4等于12,即3×4=12;
④4乘3等于12,即4×3=12;
⑤6乘2等于12,即6×2=12;
⑥12乘1等于12,即12×1=12;
⑦5乘12/5等于12,即5×12/5=12;
⑧7乘12/7等于12,即7×12/7=12;
⑨8乘1.5或3/2等于12,即8×3/2=12;
⑩9乘4/3等于12,即9×4/3=12;
①1乘12等于12,即1×12=12;
②2乘6等于12,即2×6=12;
③3乘4等于12,即3×4=12;
④4乘3等于12,即4×3=12;
⑤6乘2等于12,即6×2=12;
⑥12乘1等于12,即12×1=12;
⑦5乘12/5等于12,即5×12/5=12;
⑧7乘12/7等于12,即7×12/7=12;
⑨8乘1.5或3/2等于12,即8×3/2=12;
⑩9乘4/3等于12,即9×4/3=12;