解:456与3的商乘28积是( 4256 )
∵已知需求出456与3的商乘28积是多少
∴456与3的商乘28积
= 456 ÷ 3 × 28
= 456 × 1/3 × 28
= 456/3 × 28
= 152 × 28
= 152 × (30 - 2)
= 152 × 30 - 152 × 2
= 4560 - 304
= 4256
答:456与3的商乘28积是4256