49×19=35×15=13×18=511÷611=56×30=35×56=112+13=1112×25=12+12=58-38=56-16=1-56=14-15=910-410=0.79+0.79×99=1÷5+1÷5=0.89×101-0.89=1.1-2.7÷27=573-（273+169）=12.4×11-12.4=．

Question

(4)/(9)×(1)/(9)=	(3)/(5)×15=	(1)/(3)×(1)/(8)=	(5)/(11)÷(6)/(11)=
(5)/(6)×30=	(3)/(5)×(5)/(6)=	(1)/(12)+(1)/(3)=	(11)/(12)×(2)/(5)=
(1)/(2)+(1)/(2)=	(5)/(8)-(3)/(8)=	(5)/(6)-(1)/(6)=	1-(5)/(6)=
(1)/(4)-(1)/(5)=	(9)/(10)-(4)/(10)=	0.79+0.79×99=	1÷5+1÷5=
0.89×101-0.89=	1.1-2.7÷27=	573-（273+169）=	12.4×11-12.4=．

Answer 1

(4)/(9)×(1)/(9)=(4)/(81)	(3)/(5)×15=9	(1)/(3)×(1)/(8)=(1)/(24)	(5)/(11)÷(6)/(11)=(5)/(6)
(5)/(6)×30=25	(3)/(5)×(5)/(6)=(1)/(2)	(1)/(12)+(1)/(3)=(5)/(12)	(11)/(12)×(2)/(5)=(11)/(30)
(1)/(2)+(1)/(2)=1	(5)/(8)-(3)/(8)=(1)/(4)	(5)/(6)-(1)/(6)=(2)/(3)	1-(5)/(6)=(1)/(6)
(1)/(4)-(1)/(5)=(1)/(20)	(9)/(10)-(4)/(10)=(1)/(2)	0.79+0.79×99=79	1÷5+1÷5=0.4
0.89×101-0.89=89	1.1-2.7÷27=1	573-（273+169）=131	12.4×11-12.4=124．