The second volume of the fifth grade of mathematics, the final sprint 100, 2 1~24 pages. The answer is urgent, urgent, urgent, urgent, urgent, urgent ~ ~! ! ! !
1.(4+ 14)÷( 1-0.25-0.25)=36
2.5 decimeter = 0.5 meter
(50 ÷ 0.5) × (20 ÷ 0.5) × (1.5 ÷ 0.5) =12000 (block)12000x (1+/kl)