直接写出得数320×3=25×4=200×4=72÷8=256+34=487-271≈314×5≈409+232≈15+35=89-49=14+14=1-38=

Question

直接写出得数

320×3=	25×4=	200×4=	72÷8=
256+34=	487-271≈	314×5≈	409+232≈
(1)/(5)+(3)/(5)=	(8)/(9)-(4)/(9)=	(1)/(4)+(1)/(4)=	1-(3)/(8)=

Answer 1

320×3=960	25×4=100	200×4=800	72÷8=9
256+34=290	487-271≈200	314×5≈1500	409+232≈600
(1)/(5)+(3)/(5)=(4)/(5)	(8)/(9)-(4)/(9)=(4)/(9)	(1)/(4)+(1)/(4)=(1)/(2)	1-(3)/(8)=(5)/(8)