直接写出得数．15+25=45-25=1-23=58+38=260-140=256×0=4×25=103×4=600×3=6×80=

Question

直接写出得数． (1)/(5)+(2)/(5)=	(4)/(5)-(2)/(5)=	1-(2)/(3)=	(5)/(8)+(3)/(8)=	260-140=
256×0=	4×25=	103×4=	600×3=	6×80=

Answer 1

(1)/(5)+(2)/(5)=(3)/(5)	(4)/(5)-(2)/(5)=(2)/(5)	1-(2)/(3)=(1)/(3)	(5)/(8)+(3)/(8)=1	260-140=120
256×0=0	4×25=100	103×4=412	600×3=1800	6×80=480．